Students normally take six classes plus physical education. There are a midafternoon study period, when all teachers are available for individual questions or work, and a monitored evening study hall for residents. Science classes are lab oriented. Report cards are sent home quarterly, and monthly letters to parents are sent by the Headmaster. The Senior High School has 140 students, divided into classes by achievement.
Half are from California and six other states and half come from thirty-three different countries.
Seven Spanish-style concrete buildings encircle the playing fields in San Marino. The main library is in Pioneer Hall. Three computer rooms contain twenty-eight computers for student use. The Beaver Creek Campus has sixteen rustic stone buildings, with several ranch buildings situated around the corrals. The central library occupies a separate building, and the science classroom, laboratory, computer room, and crafts shops are in another building.