In 1962, she became principal of Mount St. Joseph's Academy in Mandeville. In 1959 Father Ashe left Spanish Town because of ill health; he later became one of the founding teachers and treasurer at Campion College in Kingston. Father Frances Jackmaugh, a Jesuit of Lithuanian descent who previously served in Kingston at St. Anne's Church and Highgate at Sacred Heart Church, assumed Father Ashe's position at St. Joseph's Church. He took an interest in the school and through his efforts land was purchased at 35 St. John's Road Spanish Town to build a new school. In March 1960, the St. Catherine High School for Girls was moved to its present address which at the time was described as a "spacious and well kept campus" at 35 St John's Road. The subjects offered at the school included cookery, literature, Latin, Spanish, Chemistry, Biology, Physics and various business subjects. In 1962 Sister Mary Paschal-Figueroa R.S.M., was transferred from Alpha Academy in Kingston to become the successor of Sister Stanislaus. Sister Paschal, a Jamaican of Panamanian roots, had previously been Headmistress of Alpha Academy in Kingston and was the principal of Mount St. Joseph Academy, a secondary school in Mandeville. Father Ashe described Sister Paschal as "warm-hearted [but] a strict disciplinarian". Upon her arrival, Sister Paschal had to repay debts the school owed for buildings that were constructed prior to her arrival; she organised fund-raising and benefit dinners. Under Sister Paschal's leadership, the school continued to maintain high educational standards despite the rapidly increasing student enrolment. Father Ashe recalled, "students began to converge on St. Catherine High School not only from the immediate environs of Spanish Town but additionally from ever-widening radius of hinterlands" Part of this new growth was the inclusion of a boys' school in 1972. This was sited south of the girls high school at what is now the Junior Campus and was started with the transfer of boys from the St. Catherine All-Age department. Permission was obtained from Archbishop John J. McEleney, S.J. and Sister Paschal's Superior to convert St. Catherine High School into a co-educational school. In 1975, Paschal Hall (named after Sister Paschal) was officially dedicated. Under Sister Paschal, the school introduced industrial arts for the boys. She wrote the school's song "Dear St. Catherine High We Love You". 6th form was first introduced at this time, preparing students for the GCE Advanced Level exams.