St. John Bosco High School (SJBHS) is a Catholic, all-male college preparatory high school located in Bellflower, California, and conducted by the San Francisco Province of the Salesians of St. John Bosco. St. John Bosco High School is named after Saint John Bosco, an Italian saint known for his dedication to educating and advocating for youth and for his "Home-School-Church-Playground" model of education. Bosco was founded as an elementary and intermediate boarding school in 1940. The first high school class graduated in 1956, and in 1979 the boarding school closed.