The Garnet Valley Joint School System was formally organized on March 30, 1959. From school year '59-'60 to school year '62-'63, Garnet Valley existed as a Junior High School housed in the Old Concord Elementary School building on Bethel Road for Grades 7 through 9. Students were then sent to Media High School for Grades 10 through 12. The last class sent to Media High School was the Class of 1965, and the first class to graduate from Garnet Valley High School was the Class of 1966.