Gonzaga High School was founded in 1887 in the basement of the Gonzaga University administration building. In 1922, the high school became a formal department of Gonzaga University. In 1954, the school moved from the original campus to its present site in the Logan neighborhood of Spokane, Washington. In 1975, in response to changing educational conditions, Gonzaga Prep became a co-educational school. In 1992, the high school implemented the Fair Share tuition program. Currently the school is within the Diocese of Spokane and is administered separately from the university.