Three O'Clock High is a high-school comedy film directed by Phil Joanou, written by Richard Christian Matheson and Thomas Szollosi, and starring Casey Siemaszko, Anne Ryan, Richard Tyson, Jeffrey Tambor, Philip Baker Hall and John P. Ryan.. The film was based, in part, on Matheson and Szollosi's high school experiences in California, but was shot at Ogden High School in Ogden, Utah.
