St Stithians College was founded in 1953 and consisted at the time of the founding BP and BC classes. In 1995, with the advent of the girls' schools on campus, the entities serving the boys became known as the Boys' College and Boys' Preparatory schools. Reference to the Boys' College within AtoM indicates the high school years from Grade 8 to Grade 12 for its entire history from 1953 to the present.