What was the first co-ed school?
Academy of Holy Angels
In September 1972, the Academy became a coeducational school. The class of 1976 was the first full four-year co-ed class. Because the school was now co-ed, the "Angies" became the "co*Stars" and varsity athletics began. Today the athletic program has grown to 33 teams representing 18 varsity sports for both girls and boys. In 1989 a middle school and theater school were established. In 1996, to enhance the campus and revenues, Holy Angels built the StarDome; a $2 million, year-round athletic facility (the first high school in the United States to have a facility of this type). The complex includes bleachers, a concession building and a playing field for Holy Angels sports and activities. The playing surface consists of Field Turf and features a removable dome to make the field playable during the winter months. The field is uncovered during the summer.
Poly Prep Country Day School
During the tenure of Headmaster William M. Williams, the school began the transition to co-education in 1977 when it first admitted girls, graduating its first coed class in 1979.
Millfield
In 1939, the school became one of the first independent schools to become co-educational. Over the years, the school acquired land and houses around the locale, and a result there were many boarding houses within a 10-mile (16-kilometre) radius of the original site; this resulted in boarders living at houses or billets in the outlying villages – being bussed in and out for lessons and meals. The girls' boarding house was at Ashcott House from 1967 until 1984.
Wellington High School, New Zealand
Wellington High School is a co-educational (since 1905) secondary school in downtown Wellington, New Zealand. In 2005 the roll was approximately 1100 students. It was founded in the 1880s as the Wellington College of Design (later the Wellington Technical Art School) to provide a more appropriate education for the Dominion than the narrow academic training provided by the existing schools. It is the first co-educational secondary in New Zealand. It is one of only two schools in Wellington (along with Onslow College), and one of only a few New Zealand secondary schools that does not have a school uniform.
Gan Eng Seng School
Gan Eng Seng School (Abbreviation: GESS) is a co-educational secondary school in Bukit Merah, Singapore. Founded in 1885 by philanthropist Gan Eng Seng, the school is the first school to be established by overseas Chinese in Singapore and is one of the oldest institutions in the nation-state.
Integrated education
The first integrated school, Lagan College, was established in Belfast in 1981 by the campaigning parent group All Children Together. In 1985, three more integrated schools opened in Belfast offering parents in the city an alternative to the existing segregated schools.
Kavanagh College
In 1989 the new Catholic co-educational school, Kavanagh College, resulting from the amalgamation of Moreau College for girls and St Paul's High School (i.e. the Christian Brothers School) for boys, commenced. The senior classes of St Edmund's School (i.e. years 7 and 8) transferred to the new college. The junior classes (Years 5 and 6) were accommodated in Dunedin Catholic primary schools and St Edmund's closed. The religious orders of Dominican Sisters, Christian Brothers, and the Sisters of Mercy were the teaching foundation of the amalgamation. Vincent Jury was appointed as the first principal of the new college. He was the last of the 23 Christian Brother Principals to exercise authority in Rattray Street in the 115 years from 1876 to 1991. The decision to end the tradition of Catholic single-sex education in Dunedin (especially the closing of Moreau College) and to combine the Catholic secondary schools into a co-educational college was controversial especially in relation to senior staff appointments at the new college.
Coral Way Bilingual K-8 Center
On September 3, 1963, Coral Way Elementary opened its doors as the first dual language program in the United States. With funding from the Ford Foundation school district leaders, school teachers, and "Cuban aides" developed a bilingual education curriculum. Although the US has a long history of bilingual education, Coral Way was the first dual language, two way immersion program in the United States. The pilot program was instituted with the 350 1st through 3rd grade students at Coral Way, selected to balance English and Spanish speaking students. The goal of the program was to promote bilingual fluency and biliteracy among all students. In the mornings, children would receive instructions in their native language (initially referred to as the "vernacular") then switch to the other language in the afternoon, sharing lunch, art, music and physical education times. Several reports indicated that both groups made progress academically in both languages(Pellerano et al., 1998).
Taunton School
In September 1971 Taunton School began the merger with Weirfield School, an independent boarding and day school for girls, which was also situated on Staplegrove Road, by admitting girls into the Sixth Form. Then in 1976 Taunton School completed this merger with the rest of the senior section of Weirfield School. This became one of the earliest fully co-educational independent schools in England. Additional buildings were erected on the original Taunton School campus, and Weirfield continued as a girls-only junior school.
William Penn Charter School
Penn Charter is among the first schools in the United States to offer education to all religions (1689), financial aid (1701), matriculation to girls (1754), and education to all races (1770). The "Charter" in the school's name does not, as might be assumed, mean that it is a modern "charter school". Rather, it is a reference to the historic document that was signed by William Penn to establish the first Quaker school in America. Originally located on the east side of Fourth Street below Chestnut, the school officially consolidated in 1874 as an all-boys college preparatory school at 12th and Market Streets. Penn Charter moved to its current forty-seven acre East Falls campus in 1925. In 1980 the school became fully co-educational by allowing girls to continue past the second grade, thus graduating the first co-ed senior class in 1992.
Single-sex education
Around 1800, girls' middle-secondary schools begun to appear, and become more common during the 19th century. By the mid 1970s, most of them had been scrapped and replaced with coeducation.
Sadie Bonnell
Sadie Bonnell was educated at Bedales, the first co-educational school in England. After leaving school she lived at home and, as she recalled, "looked after the servants, that kind of thing". At the outbreak of the First World War, when she was 26, she joined First Aid Nursing Yeomanry (FANY) as an ambulance driver. The FANYs had been founded in 1907 as an all-women mounted volunteer Corps.
Luanshya Boys Secondary School
Luanshya Boys High School was first a co-ed school. It was also one of the first schools to accept non-white students in January 1964 following Northern Rhodesia becoming semi-independent following the break up of the Federation of Rhodesia and Nyasaland at the end of 1963.
Berkeley Hall School
Berkeley Hall School was the first coed independent elementary school in Los Angeles. The other existing private schools were single sex. They were The Harvard School for Boys, Westlake School for Girls Harvard-Westlake, and Marlborough School for Girls.
Buxton College
Buxton College finally merged to become first, a Buxton comprehensive school for boys, giving it two campuses, at "Kent's Bank" (former site of Kent's Bank Secondary Modern Boys School), and "College Road" (former site of Buxton College). It then successfully merged with the local girls' schools in 1990 to become properly coeducational; these were the former Cavendish Grammar School on Corbar Road and Silverland Secondary Modern School for Girls on "Peveril Road" - these two school sites are now housing estates. The first Head mistress of Silverlands secondary School for Girls was Miss Dorothy Dewis who remained at the school for over twenty years. It formed Buxton Community School at the "College Road" campus.  The School, now as Buxton Community School officially opened in 19 October 1993, is fully coeducational and the historic problem of split sites for the schools of Buxton overcome. The "Kent's Bank" site became the site for Buxton Library.
1968
Rosewood High School
The first "Rosewood" school was constructed in 1905, at the site of the present day Eagle's Nest and surrounding shopping center. This building, a joint venture between Pine Forest and Applejack, became the first consolidated school in Wayne County. An account from some alumni states that "In winter the school was heated by a pot-bellied wood-stove. Every morning the boys would go out and cut wood; but when it was warmer and spring began, the teen-age 'hangout' was the old pump-house." Three students graduated from the school that year.
Wilbraham &amp; Monson Academy
WMA was established by the merger of two 19th-century academies — Monson Academy, founded in 1804, and Wesleyan Academy, founded in 1817 in New Market, New Hampshire. Wesleyan Academy relocated to Wilbraham in 1825 and was renamed Wilbraham Academy in 1917. In 1971, when the school merged with Monson Academy, the name was officially changed to Wilbraham & Monson Academy. Wesleyan was the first coeducational boarding school in the country, and Monson Academy became the first to enroll Chinese students in 1847.
St John's Regional College
In 1974 the whole College was on one campus and was known as St John's Regional College. Senior, Form V and VI, classes were co-ed and Form I – IV were separate boys' and girls' classes and in fact housed completely separately. During 1976 much discussion was held regarding full co-education and in 1977 the first Catholic co-educational regional college in the nation was born. This development coincided with significant enrolment increases.
National Coalition of Girls' Schools
By researching and promoting the concept of single-gender schooling, the Coalition of Girls' Boarding Schools and the Coalition of Girls' Day Schools became leaders in the national dialogue on girls' and women's issues. Those educators who were experienced with teaching only girls were determined to use the two studies to paint a different picture of the role of girls' schools in American education. The findings of the studies gave administrators in girls' schools important talking points for future marketing and promotional literature.Strengthened by their new data, the CGBS and CGDS leadership realized there was great power in collective action. In November 1991, the steering committees of both organizations met and agreed to merge. Fifty-six independent and religiously-affiliated schools officially came together to form the National Coalition of Girls' Schools. Its first collective undertaking: a comprehensive campaign to heighten the visibility and document the value of the girls' school experience.
St Wilfrid's School, Exeter
Until 1967 St Wilfrid’s was primarily a girls’ school although some boys were admitted in the lower years. However, in 1967, following the closure of Mount Radford School, the decision was made for St Wilfrid's school to become fully co-educational and so it became the first independent co-educational school in Exeter.
Episcopal Academy
Female students attended the Academy between 1789 and 1818, but a plan for permanent co-education was not implemented until 1974. In 1974, girls were admitted to kindergarten, and then to one higher grade each year thereafter. The class of 1984 was the first co-educational class to graduate from the Academy.
Cooperative education
By 1962, about 150 academic institutions used co-op education, in one form or another. Many were outside of engineering. The need for professional support of non-engineering programs became obvious, and the membership of ASEE, in 1963, began the Cooperative Education Association. To reflect its membership more accurately, it was eventually (sometime in the 1990s or early 2000s) named the Cooperative Education and Internship Association, it remains today as the professional association for co-operative education outside of ASEE.
Göteborgs Högre Samskola
The school was established in 1901, and was one of the first coeducation schools in Gothenburg, and the first one with mixed classes in High school.
Cy-Fair High School
The Cypress and Fairbanks school districts (an area now in northwest Houston) consolidated in 1939. Cy-Fair High School was opened in the spring of 1941 and received some national acclaim after being dedicated by then First Lady Eleanor Roosevelt. The first principal was Matthew Solomon, PhD. Cy-Fair High School remained the only high school (not including Carverdale High School, the African-American school prior to integration) in the Cy-Fair CSD (now ISD) until Jersey Village High School opened in 1972. There are now 12 high schools in CFISD.
Coeducation in Kuwait
In 2008, MP Ali Al-Rashid proposed a bill that would reverse the 12-year-old ban on coeducation. On the topic, Al-Rashid said: "Kuwait University was established in the 1960s as a co-ed university. Segregating students only came in 1996. If we are to go back to the origin of things, Kuwait University then is originally a co-ed facility. Religion is clear about this subject." According to Al-Rashid, university teachers and officials have complained it has been difficult and costly to teach male and female students separately.
St. Paul's Co-educational College
In 2002, the school joined the Direct Subsidy Scheme (DSS). At this year, the school admitted the first batch of P 1 and F 1 DSS students. In 2003, the school has successfully made an application under the School Improvement Program, to develop the new annex of the secondary school. In 2006, the two primary schools merged and was renamed St. Paul's Co-educational College Primary School and appointed Ms Lee Tuen Yee as the Headmistress. Under the School Improvement Program, the new annex of the Secondary School was completed. In the same year, as the co-organiser along with HKU, the College hosted the first international student conference, and held it annually in every summer since then. In 2008, the 5-year redevelopment plan of the Secondary School began. In the same year, the primary school moved to a new campus in Wong Chuk Hang, and the Kennedy Road campus was given to the secondary school for temporary use. The choir participated in the 5th World Choir Games in Graz, Austria the same year and has participated in the competition since then every two years in different continents.
St. Anne's-Belfield School
Like St. Anne's, the coeducational elementary school's origins were downtown, where in 1911 Miss Nancy Gordon opened a primary school known first as Miss Nancy's and then as Stonefield. After her death, it was merged with University Country Day School (the Bellair School) and renamed The Belfield School in 1957.
Sidcot School
The first Quaker school was established at Winscombe in 1699 to teach boys of Quaker families. The current school reopened in 1808 and welcomed girls, making Sidcot one of the oldest co-educational boarding schools in the UK.
St. Paul's Co-educational College
St. Paul's Co-educational College (), (often abbreviated as St. Paul's Co-ed., St. Paul's or SPCC) is an Anglican secondary school located at 33 MacDonnell Road, Mid-levels, Hong Kong, founded in 1915. It follows the HKDSE and IBDP curriculum, and is the first Round Square school in Greater China. It was the first school in Hong Kong to require a school uniform. Until after World War II, it was a girls-only college. Since 2001, it has been under the Direct Subsidy Scheme. It is also known for the students' academic excellency and held outstanding results in public exams. It has an affiliated primary school, making it a school of the "through-train" system.
Saint Mary's College High School
Though campus facilities improved, enrollment steadily declined, reaching a low of about 375 in 1993. The closure of Berkeley's Presentation High for girls added impetus to Saint Mary's consideration of coeducation. In 1995, the gymnasium extension and new auditorium theater were completed as part of the school's Sharing the Spirit transition to coeducation. In August 1995, after 132 years as an all-male school, a 55/45 percent mix of young men and women entered the freshman class, and twenty-two sophomore girls joined ninety-eight male classmates. At commencement exercises on May 31, 1998, graduates spoke of the initial anxiety and apprehension that had given way to achievements and friendships which ultimately united them as Saint Mary's first coed graduating class.
Atatürk's Reforms
Atatürk was a strong supporter of coeducation and the education of girls. Coeducation was established as the norm throughout the educational system by 1927. Centuries of sex segregation under Ottoman rule had denied girls equal education, Atatürk thus opposed segregated education as a matter of principle. The matter of coeducation was first raised as a result of a controversy in Tekirdağ in 1924, where, due to the lack of a high school for girls, girls requested enrollment in the high school for boys. Upon this, works on coeducation began and the Minister of Education declared that both sexes would follow the same curriculum. In August 1924, it was decided that coeducation would be introduced to primary education, giving boys the right to enroll in girls' high schools and vice versa. Atatürk declared in his Kastamonu speech in 1925 that coeducation should be the norm. Whilst the educational committee had agreed in 1926 to abolish single-sex education in middle schools that were not boarding schools, segregation persisted in middle and high schools, and statistics in the 1927–28 educational year revealed that only 29% of those enrolled in primary schools were girls. This figure was 18.9% for middle schools and 28% for high schools. Acting on these figures, 70 single-sex middle schools were converted to coeducational schools in 1927–28 and new coeducational middle schools were established. This was despite the opposition of Köprülüzade Fuat Bey, the Undersecretary for Education. Whilst the policy was transition to coeducational high schools based on the success in middle schools from 1928–29 onwards this policy could only be implemented effectively from 1934–35 onwards.
Delta State University
Co-ed
Aquinas High School (Georgia)
Aquinas High School, a Diocesan Catholic Secondary School, opened in 1957 following the merger of Boy's Catholic High School, operated by the Marist Brothers under the Roman Catholic Diocese of Savannah, and Mt. St. Joseph's Academy, owned and operated by the Sisters of St. Joseph of Carondelet. Aquinas, one of the first co-institutional high schools in the nation, became co-educational in 1969, as recommended by the Southern Association of Colleges and Schools.
Southern High School (Baltimore)
S.H.S. was originally built in 1910 as one of the first of a new national type of school becoming popular in American public education by the 1920s organizing grades seven, eight and nine together, then known as the "junior high school" (later reorganized, advanced earlier by a grade and known as "middle schools" for the 6th-7th-8th grades by the 1980s) and had a co-ed student body with both boys and girls for the first time in Baltimore City, which previously only had four specialized/college preparatory/citywide, sex-segregated (single sex) public high schools - with all-male: Baltimore City College (1839), Baltimore Polytechnic Institute (1883), and the all-female: Western High School (1844), Eastern High School (1844), since the beginnings of the Baltimore City Public Schools system in 1829. Also a public high school had also been established in 1883 "The Colored High School", which later became Frederick Douglass High School which at some point in its history became open to both African-American boys and girls. In addition, with also co-educational Forest Park High School later built in the early 1920s in the northwest area of the City as the first "co-ed" Baltimore public high school, these types of neighborhood/district "comprehensive" public high schools soon spread through all quadrants of the City, eventually numbering about 20 co-ed neighborhood high schools in the Baltimore City Public Schools by the early 1970s. In the surrounding rural now suburban Baltimore County to the west, north and east of the city and Anne Arundel County to the city's south, the first public high school established in the late 19th century were open to both boys and girls and eventually grew to a similar number of about 25 secondary schools in neighborhoods each in both counties to the present.
Rochdale College
The college took its name from Rochdale, a town in north-west England, where the world's first cooperative society was established in 1844. The Rochdale Society of Equitable Pioneers is usually considered the first successful co-operative enterprise, used as a model for modern co-ops, following the 'Rochdale Principles'. A group of 28 weavers and other artisans set up the society to open their own store selling food items they could not otherwise afford. Within ten years there were over 1,000 co-operative societies in the United Kingdom.
Coburg High School
Coburg High School was originally established in 1916 on Bell Street in Coburg as one of the first coeducational state secondary schools in Victoria, opening with Ned Sheehan as headmaster and 195 students. Founded during the First World War, at that time the school was used as an emergency hospital during that time. The first ‘Leaving Certificate Class’ graduated from Coburg High School in 1921. By 1924 there were more than 400 students enrolled in the school. By 1955 there were 673 students enrolled and by 1985 there were 758 students.
Happy School, Darya Ganj
Happy School, situated in Darya Ganj, New Delhi, India, is a public co-ed school, the first co-ed school in Delhi, established by the late Shri Padam Chand Ji.
Phillips Academy
Phillips Academy admitted only boys until the school became coeducational in 1973, the year of Phillips Academy's merger with Abbot Academy, a boarding school for girls also in Andover. Abbot Academy, founded in 1828, was one of the first incorporated schools for girls in New England. Then-headmaster Theodore Sizer of Phillips and Donald Gordon of Abbot oversaw the merger.
National Orthodox School
Established in 1957, NOS was the first co-educational school in the country. Operating out of a rented building in the Jabal Amman, they began with only 70 students and four teachers in three grades (KG1 - Grade One). In 1965, they moved to their permanent premises in the Shmaisani area of West Amman, and they continued to grow until they celebrated their first graduating class in 1972. Today, the school’s population has grown to around 2400 students (from KG1 – Grade 12), with more than 360 staff members.
Cardinal Stritch High School (Ohio)
On the school's website it states, "A twenty-acre site was chosen for the East Side area's first co-institutional high school." One side of the school was originally reserved for boys' classes, while the other was for girls', with co-educational classes being held in the center sections. (The separate wings were integrated in 1971 when all classes became co-educational.) The first principal was Monsignor Michael Walz, who initiated the "Stritch Family" concept.
Little Flower Junior College
Co-education was introduced in 1997.
Saint John's Catholic Prep (Maryland)
The Jesuits left Frederick in 1903, and transferred control of the St. John's Literary Institution and the parish of St John the Evangelist Roman Catholic Church to diocesan priests from Baltimore, Maryland. In 1915, Father William Kane, the first diocesan pastor of St. John's the Evangelist of Frederick, arranged for the educationally focused women's religious order, the School Sisters of Notre Dame to help staff the school. He also combined classes from the girls' Visitation Academy and the boys from St. John's to create the first co-ed school under the name of St. John's L.I.
Education in Kansas
The state's universities were among the first public universities in the country to be coeducational. Kansas State became the second coeducational public institution of higher education when it opened in 1863; enrollment for the first session was 52 students: 26 men and 26 women. The University of Kansas was also among the earliest to offer mixed-sex education, in 1869. Both KU and Kansas State were also open to students of all races from their inception.
Collegiate School (New York City)
Collegiate states it is the oldest school of any kind in the United States. Prior to 1984, the common belief was that the school had been founded in 1638, placing it two years later than the founding of Harvard University and three years after the founding date of Boston Latin School. Massimo Maglione, a historian and Upper School teacher at Collegiate, conducted research into the accuracy of this date and discovered a letter that Collegiate's founder—the Reverend Jonas Michaëlius, the first minister of the Dutch Reformed Church in America—had written in 1628 about his efforts to teach the catechism to Indian children. Based on this evidence, the school in 1984 officially moved up its founding to 1628.
School integration in the United States
Some schools around America were integrated before the mid-20th century, the first ever being Lowell High School in Massachusetts, which has accepted students of all races since its inception. The earliest known African American student, Caroline Van Vronker, attended the school in 1843. The integration of all American schools was a major catalyst for the civil rights action and racial violence that occurred in the United States during the latter half of the 20th century.
Achimota School
Achimota School (formerly Prince of Wales College and School, Achimota, now nicknamed Motown), is a co-educational boarding school located at Achimota in Accra, Greater Accra, Ghana. The school was founded in 1924 by Sir Frederick Gordon Guggisberg, Dr. James Emman Kwegyir Aggrey and the Rev. Alexander (Alec) Garden Fraser. It was formally opened in 1927 by Sir Frederick Guggisberg, then Governor of the British Gold Coast colony. Achimota, modelled on the British public school system, was the first mixed-gender school to be established on the Gold Coast.
Saint Francis School (Hawaii)
In the fall of 2006, the school announced that it will be a co-ed school. The school became fully co-ed in school year 2012-2013.
Oakwood Friends School
In 1794, the New York Yearly Meeting appointed a committee of twenty-five to establish a school; their first meeting was on January 13, 1795. On May 1 of that year the New York Yearly Meeting purchased a house and ten acres from Joseph Mabbet, a Quaker from Connecticut, for 1600 pounds, a down payment of 214 pounds was made from the donors, Tripp Mosher, Isaac Thorn, William Thorn, Joseph Talcott, Shadrach Richetson and Jonathan Deuel. With plans of opening a school for the children of nearby Quaker families, it opened on December 20, 1796, and was given the name Nine Partners School in Mechanic, which is now in South Millbrook, New York. This was the state's first co-educational boarding and day school. The school's first superintendent was R. Tripp Mosher, and its first principal was Jonathan Talcott, a children's book publisher. The school had a total of one hundred students: 70 boys and 30 girls. The children were between the ages of seven and fourteen years old for girls, and up to age fifteen for boys.
Mixed-sex education
Several early primary and secondary schools in the United States were single-sex. Examples include Collegiate School, a boys' school operating in New York by 1638 (which remains a single-sex institution); and Boston Latin School, founded in 1635 (which didn't became coeducational until 1972).
Mixed-sex education
In American colloquial language, "coed" or "co-ed" is used to refer to a mixed school.
The word is also often used to describe a situation in which both sexes are integrated in any form (e.g., "The team is coed"). As a noun, the word "coed" is used to refer to a female student in a mixed gender school. The noun use is considered sexist and unprofessional by those who argue that it implies that including women somehow transforms what is "normal" (male-only "education") into something different ("coeducation"): technically both male and female students at a coeducational institution should be considered "coeds". Numerous professional organizations require that the gender-neutral term "student" be used instead of "coed" or, when gender is relevant to the context, that the term "female student" be substituted. Usage guides make no exception for any use of the noun to distinguish a female student at a coeducational institution from a student at a women-only institution: they do not even mention such use, possibly because such uses are comparatively rare and because the term cannot be distanced from its unacceptable uses.
Meridian Secondary School
Siglap Secondary School (Abbreviation: SSS) was Singapore's first co-educational secondary school, was also among one of the first schools in Singapore to offer Malay-medium secondary classes. The school was founded in 1955 and shifted from its original location of Cheviot Hill in Siglap to its current location of Pasir Ris in the eastern part of Singapore.
Steep, Hampshire
Voluntary schools were built in Steep in 1875, and the first almshouses were constructed by William Eames in 1882. The first coeducational boarding school in England, Bedales School was constructed in 1899 at a cost of approximately £60,000, which at the time of 1912, had an enrolment of 160 children. However, another source described the school as being constructed in 1900, and was formerly located in Lindfield, West Sussex.
Queen's College (Barbados)
In 1970, Elsie Payne (née Pilgrim) became the first Barbadian headmistress, and during her tenure of office, co-education was introduced, when thirty-eight first form boys entered the school in 1980. After Dame Elsie Payne's retirement, Colleen Winter-Brathwaite was appointed headmistress of the school in 1985. She was followed by Coreen Kennedy in 1997. The school's first headmaster, Dr. David Browne, was appointed in July 2008.
Caedmon School
The Caedmon School is an independent coeducational elementary school located on the Upper East Side of Manhattan in New York City. The school, which employs a modified Montessori curriculum, was the first Montessori school established in New York City and the second in the United States.
Tarsus American College
Coeducation started in 1979 with 35 girls joining the student body of 506 boys. In 1986, the school graduates its first coed alumni. The same year, the boarding section, available from the preparatory class, was closed until its reopening for boys in 2002.
Heathfield School, Pinner
Heathfield had enjoyed a strong rivalry in both academic and non-academic areas against North London Collegiate School (the first girls' school in the United Kingdom to offer girls the same educational opportunities as boys), until the merger with Northwood College in 2014 (whose rival is St. Helen's School).
The College of Haringey, Enfield and North East London
This site, built in 1913, is based in the former Tottenham County School. The County School was established by Middlesex County Council in 1901 as its first co-educational selective grammar school, and it was one of the first in the country. There were concerns that mixed gender education would be a challenging environment for girls and that boys would be held back. However, the headmaster Mr CH Peters noted that the fear of many parents regarding mixed education proved groundless and when His Majesty's Inspector's visited in 1902, they generally agreed that a mixed school was positive. The County School was first based in Grove House when it was the home of Tottenham Polytechnic (see above), and the history of the two institutions have been connected from the beginning. The County School, in spite of its temporary premises, got off to a good start as recorded by HMI reports. Numbers on roll started around 80, but reached 141 by the end of the year, 69 of whom were girls and 72 boys. The pupils came from a wide area, as well as Tottenham, including Edmonton, Waltham Cross, Hornsey, Wood Green, Finsbury Park, Stoke Newington, Shoreditch and Hackney. As a secondary grammar school, it was fee paying with charges of 31s6d a term, although following the 1907 Education Act some free places were reserved for successful scholarship entrants from state elementary schools
The Thacher School
The Thacher School is a selective, co-educational, independent boarding school located on 427 acres (1.5 km²) of hillside overlooking the Ojai Valley in Ojai, California, United States. Founded in 1889 as a boys' school, it is now the oldest co-ed boarding school in California. Girls were first admitted in 1977. The first co-ed graduating class was the class of 1978. The student body numbers 235.
Women's colleges in the United States
Many public women's schools also went coeducational in the postwar era. One of the first schools to make the transition in this era was Madison College in Virginia, known since 1976 as James Madison University. The school, founded as a women's college in 1908, admitted its first male day students in 1946, although it was not officially recognized as a coeducational institution until 1966. In 1947, Florida State College for Women returned to its original status as a coeducational institution and adopted its current name of Florida State University. Three other public women's schools in Virginia later followed Madison College in adopting coeducation—Mary Washington College, now the University of Mary Washington, in 1970; Radford College, now Radford University, in 1972; and Longwood College, now Longwood University, in 1976. In North Carolina, the Women's College of the University of North Carolina was converted to the coeducational University of North Carolina at Greensboro in 1963, at the same time as women were finally admitted to all programs of its rival school, the University of North Carolina at Chapel Hill. In 1967, the school then known as the Women's College of Georgia became coeducational; it is now Georgia College & State University.
Perth Modern School
The first concept provided co-education granting young women and young men access to the same higher education pathway. When Perth Modern School opened, it was rare to find women participating in the same endeavours on the same playing field as men. Prior to Perth Modern School, the only high schools in Western Australia were eight independent schools. These schools were sectarian, unisex, high fee paying schools, and only three of the eight schools catered for young women. The school educators helped raise the consciousness in generations of students who were ready, willing and able to advocate change for justice and equality based on merit, as they entered the world and pursued their careers.
Phillips Exeter Academy
The school's first enrolled class counted 56 boys; in 1970, when the decision was made to implement co-education, there were 700 boys. The 2018 Academic Year saw enrollment at 1,095 students with 884 boarding students and 211 day students. The student body is composed of a roughly equal ratio of male and female students who are housed in 25 single-sex dormitories and 2 coed dormitories. Each residence is supervised by a dormitory head selected from the faculty.
Kolej Sultan Abdul Hamid
Since its early days, the college had allowed co-education. After World War II, more girls were admitted, and in 1953 the Darulaman Magazine commented: "Owing to the shortage of teachers and the small number of students in Kampong Baru Girls' School (KBGS), co-education has been introduced into the Sultan Abdul Hamid College (SAHC) in 1948. KBGS sent only students of Standard Seven. They were Kalsom and Swee Eng, but towards the end of the year Che Zaidah joined them."
Emmaus College, Melbourne
Emmaus College was established in February 1980 through the merger of St Thomas More's Boys College in Vermont South (1968–1979) and Chavoin's all Girls College in Burwood (1966–1979). Emmaus College was the first co-educational secondary college in the Archdiocese of Melbourne to be formed from the union of an all-boys school with an all-girls school.
Women's education in the United States
Some were founded as co-educational institutions; Oberlin College, founded in 1833, was the first college to accept women and African Americans as students.
Women's colleges in the United States
While there were a few coeducational colleges (such as Oberlin College founded in 1833, Guilford College, in 1837, Lawrence University in 1847, Antioch College in 1853, and Bates College in 1855), almost all colleges and universities at that time were exclusively for men. The first generally accepted coordinate college, H. Sophie Newcomb Memorial College, (with Tulane University), was founded in 1886, and followed a year later by Evelyn College for Women, the coordinate college for Princeton University. The model was quickly duplicated at other prestigious universities. Notable 19th-century coordinate colleges included Barnard (with Columbia University), Pembroke (with Brown University), and Radcliffe College (with Harvard University). Twentieth-century examples include William Smith College (coordinate with Hobart College) and Kirkland College associated with Hamilton College. (The latter no longer exists as a stand-alone institution.)
Cumberland, Maryland
In 1864 the state legislature provided funds, and a structure for obtaining local funds from taxes and private donations for the purpose of funding schools for Negroes. The first public school for African-Americans in Cumberland operated in a colored YMCA on Independence Street, and was named the Mary Hoye school. In 1923 a new school for blacks was built on Frederick Street. In 1941 an election was held of students and faculty, and the school was renamed George Washington Carver School. In addition to serving the local population, many black people from surrounding areas in West Virginia sent their children to Carver because of the inadequate local facilities. The schools were integrated in 1955, when 54 negro children attended the white schools. In 1956, 3 black students became the first to graduated from Allegany County's newly integrated schools.
Colegio San Andrés
The school was opened to female students in 1994. The class of 2004 was the first coeducational class to graduate.
San Clemente High School (Mayfield, New South Wales)
In 1983 the school became co-educational and the first boys were enrolled.
Edgeborough School
Edgeborough was established in 1906 in Guildford as a small, privately owned boarding school for boys. It moved to its present site in Frensham in 1939. It became a charitable trust in 1966, and co-education was introduced in 1992 when the Pre-Prep and Nursery departments were opened.
Guilford County, North Carolina
Education has long been a hallmark of the county, which founded "first" among its institutions. Guilford College was founded in 1837 as the New Garden Boarding School; its name was changed in 1888 when the academic program was expanded considerably. Guilford is the third-oldest coeducational institution in the country and the oldest such institution in the South. Greensboro College, established by the Methodist Church through a charter secured in 1838, was one of the earliest institutions of higher education for women in the United States. It became coeducational in 1954.
Second-wave feminism
Sarah Lawrence College declined an offer to merge with Princeton University, becoming coeducational in 1969. Connecticut College also adopted coeducation during the late 1960s.
Wells College, previously with a student body of women only, became co-educational in 2005. Douglass College, part of Rutgers University, was the last publicly funded women's only college until 2007 when it became coed.
St Andrew's Cathedral School
During the 2006 Speech Night, the school revealed a plan to introduce full co-educational years from Kindergarten through to Year 12 in 2008. In 2006, the youngest female student was enrolled in Year 8, and graduated with the Class of 2010. During 2007, 10 girls were enrolled into the middle school (Years 7 to 9) and the school introduced twin classes (single-sex classes) in those years for the key subjects of English, Mathematics and Science. All other subjects, including sport, and in all other years of the school, are taught in a co-educational environment. St Andrew's was the first independent school in New South Wales to choose this twinning model in a coeducation environment.
Daryaganj
Darya Ganj has the first co-education school of Delhi, Happy School, located on Padam Chand Marg.
Single-sex education
Until the 19th century, single-sex education was the norm in the US, although this varied by region. In New England there was more mixed-sex education than in the South, and girls in New England had more access to education in general. With the generalization of elementary education in the 19th century, mixed-sex education started to spread rapidly. According to Cornelius Riordan, "By the end of the nineteenth century, coeducation was all but universal in American elementary and secondary public schools (see Kolesnick, 1969; Bureau of Education, 1883; Butler, 1910; Riordan, 1990). However, higher education was usually single-sex, and men's colleges and women's colleges were common well into the 20th century. A form of education strongly associated with sex-segregation is that of Catholic schools, although many Catholic schools today are coeducational. The idea of educating students differently by sex, formally or informally, was common until the 1970s.
Ohio Union
The first co-ed Ohio Union was built in 1951. Before any of this happened though, the students of The Ohio State University came together and petitioned for a new union that allowed for the men women own equal rights and visits to the union. The students felt very strongly that they should have equal rights, so much that they even agreed to contribute to the costs of making a new union. Construction of the new union went underway in June 1949 and it was completed two years later in 1951. This Union housed a dining room, two ballrooms, a browsing library, music lounge, pool tables, a 16-lane bowling alley and nineteen offices used for various student organizations. As the decades passed, the Union made sure to adjust to the needs of the students accordingly. In the 1960s and '70s during the Vietnam War the Union strove to be of service to students that were going through an era of protest and warfare. In 1985, as technology was advancing and the creation of the computer evolved, a micro-computer lab was made in the Union to help students with research and various studies. As time passed, not only did technology advance, but so did the modern standards of living. By the late 1980s the Union began to lose its charisma to students. Also, a study done in 1986 found that about $10 million would need to be added by 1994 to fix the plumbing, roofing and heating system in the union. In 1994 there were plans to renovate the Union, but those plans were shot down in 1996 by the Student Council. Rebecca Park, director at the time, promised to fully satisfy the needs of the students, with the Union Mission by providing the best recreational activities she could. She also decorated the Union with a scarlet and grey theme, matching the school's colors. Even with the changes, the Union still was outdated. In the 20032004 school year, a proposition to build a new Union was brought up again, and the three student governments at Ohio State agreed to campaign a rally to start the construction of a new building. To help with the student's campaign, Union staff went to different residence halls and also to any other students who were interested in learning about a new Ohio Union by putting on a 'road-show' exhibit. Finally, in June 2004, all the campaigning was successful and the Board of Trustees agreed with the plans to tear down the old Union and start the construction of a new one. The old Union was torn down in 2006 and construction of the new Union began one month later.
Morristown–Beard School
The all-boys Morristown School merged with the all-girls Beard School in 1971. The new co-ed school elected to use Morristown School's campus in Morristown and close the Beard School's campus in Orange. (The former campus of the Beard School now houses the White House Healthcare & Rehabilitation Center.) On Prize Day, June 5, 1971, the Morristown School officially transitioned into Morristown–Beard School, a name chosen to reflect the importance of the history of its predecessor schools.
Marian Catholic High School (Illinois)
In 1949, after making a request to Samuel Stritch, Cardinal Archbishop of Chicago, a priest at St. Agnes parish in Chicago Heights was given permission to purchase land and begin raising funds for the construction of a coed high school. By 1951 enough capital had been raised to hire a local architect to design the building. The Cardinal then mandated that there were to be two cooperative schools, one for women and one for men, each to be run by a religious order. The new plan called for the first school to accept coed classes until the boys' school was ready, about four years after the school for women was open.
Bronx High School of Science
In 1946, as a result of the efforts of Meister, the faculty, and the Parents Association, the school became co-ed, giving girls of New York equal opportunity to pursue a quality education in a specialized high school, previously denied to them. This expansion to co-education preceded its rivals Stuyvesant (1969) and Brooklyn Tech (1972) by more than two decades.
Addey and Stanhope School
The Education Act 1870 took the responsibility for elementary education out of private hands and into local authority control, as a result the governors of the Stanhope School decided to close the school and use the money to send children to other schools in the local area. By 1891 the governors of the Addey School also felt that their School was no longer useful, the two schools eventually merged in 1894 to found the Addey and Stanhope School for Art and Science. Sir Alfred Brumwell Thomas, a leading architect in the High Edwardian Baroque style, designed the main school building, a dignified L-shaped red-brick building with prominent gables and a grand doorcase, it was completed in 1899. Along with the statue of the schoolgirl, a tablet to John Addey was erected in 1906 in the entrance hall to commemorate the tricentenary of his death. 
Addey and Stanhope was a grammar school from 1944 until 1977 and was one of the first co-educational secondary schools in England. After the merger, Mr Salter became the headmaster in 1896, remaining head for 28 years. During this time, the present school building was opened in 1900, the south wing being added in 1933. Basil Alvin Howard became headmaster in 1924, encouraging co-education, beginning foreign School trips and was the author of two books "The Mixed School" and "The Proper Study of Man" before retiring in 1956 . In 1991 the Basil Howard Research Studentship was established for Sidney Sussex College, Cambridge, at the bequest of Basil Howard, who had graduated from Sidney Sussex College in 1913. The Studentship is designed for those wishing to study a Ph.D in any subject at Cambridge. Due to the threat of bombing, the School was evacuated in 1939 to a mansion in Burwash Common, East Sussex. However, as
World War II progressed the School moved again to Garnant, South Wales for the duration of the War. On the afternoon of 25 November 1944, New Cross Gate suffered the single most devastating V-2 rocket attack on a civilian population in the entire war. The rocket landed on a very busy Woolworths on New Cross Road killing 168 people and wounding 121; among the dead were two Addey and Stanhope school pupils, Ronald James Kenwood and Norman Henry Wilkins, both aged 11. Two more pupils were killed during the war, Stanley Fox aged 12 and Henry Jack Foweather aged 19, both killed at their homes in air raids.
Westbrook College Historic District
The Westbrook College Historic District is a historic district in the Deering neighborhood of Portland, Maine. It is centered on the campus of the former Westbrook College, founded in 1831 as the nation's first coeducational boarding school. The college merged with the University of New England in 1996. The district, which includes six buildings constructed between 1833 and 1952, was added to the National Register of Historic Places in 1977.
St Hilda's College (University of Melbourne)
Although initially established as a college for women, when all colleges were single-sex residences, St Hilda's was the first at The University of Melbourne to become co-educational, in 1973. A fitting tribute to its namesake, St Hilda, who is believed to have run the first co-educational abbey in the English town now known as Whitby, in the years around 663AD.
Tarsus American College
1979
The school starts co-ed education. Alongside 506 boys, there are 35 girls in the student body.
Mixed-sex education
The oldest extant mixed-sex institute of higher education in the United States is Oberlin College in Oberlin, Ohio, which was established in 1833. Mixed-sex classes were admitted to the preparatory department at Oberlin in 1833 and the college department in 1837. The first four women to receive bachelor's degrees in the United States earned them at Oberlin in 1841. Later, in 1862, the first black woman to receive a bachelor's degree (Mary Jane Patterson) also earned it from Oberlin College. Beginning in 1844, Hillsdale College became the next college to admit mixed-sex classes to four-year degree programs.
Valparaiso University
Originally named Valparaiso Male and Female College, Valparaiso University was founded in 1859 as one of the first coeducation colleges in the United States. Due to reverses brought about by the Civil War, the college was forced to close its doors in 1871. Two years later it was revived by educator Henry Baker Brown and named Northern Indiana Normal School and Business Institute. At the turn of the 20th century, Brown changed the college's name to Valparaiso College, and shortly after it was rechartered as Valparaiso University. Initially founded by Methodists, in 1925 the school was purchased by the Lutheran University Association, which continues to operate it today.
Women's colleges in the United States
A few historically black women's colleges became coeducational: Barber-Scotia College adopted coeducation in 1954; Tillotson College (a women's college from 1926 to 1935) is now coeducational Huston-Tillotson University; Hartshorn Memorial College merged with Virginia Union University in 1932; and Mary Allen Seminary became coeducational in 1933. Bennett College, founded as a coeducational school, became a women's college in 1926.
Læssøesgades School
In 1916 it was decided to build a new co-ed school in southern Aarhus in response to rapid population growth. The site chosen was what at the time was the edge of the city. The architect Ludvig Petersen had previously and recently worked on the Samsøgade School from 1914 and was chosen for the new project. The school was finished in 1921 and inaugurated on 16 April. The new school proved an expensive project at 1.5 million Danish Kroner compared to the 400.000 the Samsøgades school had cost. Lassøgade School was larger but the causes of the cost difference can mainly be found in the First World War and the ensuing inflation. The school initially had 31 class rooms and between the years 1930 and 1960 it had an average of 1000 to 1300 students. The student body has since grown steadily smaller and by 1999 it was down to 350 students across 31 class rooms. Co-ed classes were not introduced until 1946. In 1961 Læsseøgade School became the first school in Aarhus to offer the optional and voluntary 10th grade.
Chigwell School
Following a trend set by many HMC schools (which were mainly all-boys), the sixth form section became coeducational and its first girls were admitted in the summer term of 1974. In 1997 coeducation was extended to the rest of the school.
Mixed-sex education
St. Paul's Co-educational College was the first mixed-sex secondary school in Hong Kong. It was founded in 1915 as St. Paul's Girls' College. At the end of World War II it was temporarily merged with St. Paul's College, which is a boys' school. When classes at the campus of St. Paul's College were resumed, it continued to be mixed, and changed to its present name. Some others renowned mixed-sex secondary schools in town include Hong Kong Pui Ching Middle School, Queen Elizabeth School and Tsuen Wan Government Secondary School. Most of the Hong Kong primary and secondary schools are mixed-sex educations, include government public schools, charter schools and private schools.
Coe-Brown Northwood Academy
Coe-Brown Northwood Academy was founded in 1867 as a small private academy after veterans from the Civil War had pushed for the creation of a high school in Northwood. Shares were sold to 200 shareholders at $10.00. The shareholders originally owned the academy. Another high school in Northwood, the Northwood Seminary, was created in the same year. The first headmaster of Northwood Academy was the Reverend Eliot Cogswell.
Lausanne Collegiate School
Although boys had been enrolled in Lausanne’s kindergarten program as early as the 1930s, the expansion of the Montessori Method through lower school expanded enrollment of boys in all grades pre-kindergarten through sixth. Extensive investigation led faculty, administration and board members to conclude that coeducation was preferable to single-sex education in many respects. The Upper School became gender integrated in the late-1970s, and Lausanne graduated its first co-ed class in 1981.
Satpati High School
Co-ed
Clarendon School for Girls
The commercial environment for independent girls' schools became ever more challenging during the 1980s and 1990s, with boarding numbers also declining. In 1992 Clarendon School agreed to merge with Monkton Combe School, an independent boys' school based just outside Bath, Somerset which had been founded in 1868. The two schools shared the same aims and Christian ethos and as Monkton Combe School had taken the decision to become fully co-educational that same year, the merger proved an ideal opportunity swiftly to achieve this objective.
Johns Hopkins Hospital
In 1893, Johns Hopkins University was one of the first medical schools to admit women. The decision to begin coeducation was a result of a shortage of funds, as the B&O Railroad stock that was supposed to cover cost was used up in building the hospital in 1889 and the medical school had not yet been built. Four of the original trustees’ daughters offered to raise the money needed to open the school, but only if the school agreed to admit qualified women to the university. After several discussions the trustees agreed to their terms and accepted the financial help of these four women, with only one of the doctors, William Henry Welch resisting. Eventually even Welch changed his views on coeducation, "The necessity for coeducation in some form," he wrote later, "becomes more evident the higher the character of the education. In no form of education is this more evident than in that of medicine ... we regard coeducation a success; those of us who were not enthusiastic at the beginning are now sympathetic and friendly."
Cobb County School District
At least one other school has been demolished. The original Blackwell Elementary School in the Blackwells community was built in the 1920s on Canton Road (old Georgia 5), as the county's first consolidated school. The historic schoolhouse, and all of its later additions, were destroyed in summer 1997 and closed for a year while a new replacement was built on the same site, in an institutional style much like the plain architecture of an office park rather than a historic school.
Mid-Levels
St. Paul's Co-educational College was established in 1915 as St. Paul's Girls College. After temporarily merging with St. Paul's College, the school retained its co-educational status. It is one of the first schools to convert to the Direct Subsidy Scheme in 2002, and is introducing an International Baccalaureate curriculum. Currently, the primary school section is no longer housed in the same campus as the secondary school, and has moved to a new campus in Wong Chuk Hang.
John Jay Shipherd
The first Oberlin classes began in December 1833. Shipherd led the first church services in Oberlin Hall. From the beginning, Shipherd planned for the college to educate both women and men. Oberlin was the first co-educational college in the United States. Both Shipherd and Stewart served as Trustees, after Oberlin was incorporated by Ohio in March 1834.
San Francisco, Cundinamarca
In 1884, the first "mixed" school was founded. In 1895, Mayor Rogelio Alvarado and the priest Florentino Sarmiento established a Post & Telegraph office.
Comprehensive school
The first comprehensives were set up after the Second World War. In 1946, for example, Walworth School was one of five 'experimental' comprehensive schools set up by the London County Council Another early comprehensive school was Holyhead County School in Anglesey in 1949. Coventry opened two Comprehensive School in 1954 by combining Grammar Schools and Secondary Modern Schools. These were Caludon Castle and Woodlands. Another early example was Tividale Comprehensive School in Tipton. The first, purpose-built comprehensive in the North of England was Colne Valley High School near Huddersfield in 1956.
Mixed-sex education
Given their dual role as both boarding house and educational establishment, individual colleges at Oxford and Cambridge remained segregated for much longer. The first Oxford college to house both men and women was the graduate-only Nuffield College in 1937; the first five undergraduate colleges (Brasenose, Hertford, Jesus, St Catherine's and Wadham) became mixed in 1974. The first mixed Cambridge college was the graduate-only Darwin from its foundation in 1964. Churchill, Clare and King's Colleges were the first previously all-male colleges of the University of Cambridge to admit female undergraduates in 1972. Magdalene was the last all-male college to become mixed in 1988.
Solebury School
Solebury School was conceived by Laurie Erskine, Julian Lathrop, Robert Shaw and Arthur Washburn in the early 1920s. It opened in September 1925 in a rented quarters with four boys and four teachers. A year later, the founders purchased Michener Farm, which remains the institution's site today. In 1949 the school merged with another local school, the Holmquist School for Girls, which had a similar educational philosophy and often shared events and productions. It became one of the first coeducational independent schools in the country.
Cotting School
Cotting School was founded in 1893 and was America's first day school for children with physical disabilities.
From its founding until its merger with the Krebs School in 1986, Cotting School was located at 241 St. Botolph Street in Boston Massachusetts. The school was founded by Drs. Edward H. Bradford and Augustus Thorndike, both orthopedic surgeons at Children's Hospital Boston and was originally called The Industrial School for Crippled and Deformed Children. The school was also known as the Industrial School for Crippled Children and Cotting School for Handicapped Children.