The 24-acre (97,000 m2) campus is located in Torrance, California, in southwest Los Angeles County, one mile (1.6 km) from the Pacific Ocean and the Del Amo Mall.

As the ordinary of the diocese from 1896 to 1902, Montgomery demanded that government recognize the right of parents to send their children to schools of their choice.

Bishop Montgomery competes in most high school sports, playing in the California Interscholastic Federation (CIF) Del Rey League against Bishop Amat (La Puente), St. Bernard (Playa del Rey), St. Paul (Santa Fe Springs), and Junipero Serra (Gardena).

Other local rivals include Torrance High School, St. John Bosco (Bellflower), and St. Joseph (Lakewood).

Most recently, the department has hosted a spring SCSBOA (Southern California School Band and Orchestra Association) Solo / Ensemble Festival, and traveled with 80 participants to Washington, D.C., to perform at the World War II Memorial.