A
- A. B. Miller High School, Fontana, California
- Abraham Lincoln High School, San Diego, California
- Abraham Lincoln High School, San Francisco, California
- Abraham Lincoln High School, San Jose, California
- Acalanes High School, Lafayette, California
- Adolfo Camarillo High School, Camarillo, California
- Adrian C. Wilcox High School, Santa Clara, California
- Agoura High School, Agoura, California
- Alameda High School, Alameda, California
- Albany High School, Albany, California
- Alemany High School, Mission Hills, California
- Alhambra High School, Alhambra, California
- Alhambra High School, Martinez, California
- Alisal High School, Salinas, California
- Aliso Niguel High School, Aliso Viejo, California
- Alpaugh High School, Alpaugh, California
- Alta Loma High School, Alta Loma, California
- Amador High School, Sutter Creek, California
- Amador Valley High School, Pleasanton, California
- American High School, Fremont, California
- Amos Alonzo Stagg High School, Stockton, California
- Anaheim High School, Anaheim, California
- Analy High School, Sebastopol, California
- Anchorpoint Christian School, Gilroy, California
- Anderson Union High School, Anderson, California
A (continued)
- Anderson Valley Junior-Senior High School, Boonville, California
- Andrew P. Hill High School, San Jose, California
- Angelo Rodriguez High School, Fairfield, California
- Animo Leadership High School, Inglewood, California
- Animo Robinson High School, Los Angeles, California
- Animo South Los Angeles High School, Los Angeles, California
- Ann Sobrato High School, Morgan Hill, California
- Annenburg High School, Los Angeles, California
- Antelope High School, Antelope, California
- Antelope Valley Christian High School, Lancaster, California
- Antelope Valley High School, Lancaster, California
- Antioch High School, Antioch, California
- Anzar High School, San Juan Bautista, California
- Apple Valley High School, Apple Valley, California
- Aptos High School, Aptos, California
- Aquinas High School, San Bernardino, California
- Aragon High School, San Mateo, California
- Arcadia High School, Arcadia, California
- Arcata High School, Arcata, California
- Archbishop Mitty High School, San Jose, California
- Argonaut High School, Jackson, California
- Arleta High School, Arleta, California
- Arlington High School, Riverside, California
- Armijo High School, Fairfield, California
- Army-Navy High School, Carlsbad, California
