Colleyville Heritage High School  Colleyville Heritage High School (CHHS) is a public secondary school in Colleyville, Texas in the Dallas-Fort Worth area. The school is a part of the Grapevine-Colleyville Independent School District and serves freshmen through senior students in Colleyville and the surrounding areas. In 2018, the school met standards for student achievement, student progress, closing performance gaps, postsecondary readiness, and earned distinction in English language arts/reading, mathematics, and science. The school had a total student population of 2,000 during the 2017-2018 school year. Colleyville Heritage High School, the second public high school in the Grapevine-Colleyville Independent School District, opened its doors on August 15, 1996, two years after the construction that began on March 1, 1994.