| Name |
County |
| Oakdale High School |
Stanislaus County |
| Oakendell Community High School |
Calaveras County |
| Oakland Charter High School |
Alameda County |
| Oakland High School |
Alameda County |
| Oakland International High School |
Alameda County |
| Oakland Technical High School |
Alameda County |
| Oakland Unity High School |
Alameda County |
| Oakmont High School |
Placer County |
| Oakview Alternative High School |
Shasta County |
| Oasis Community Day |
Stanislaus County |
| Oasis Community School |
Shasta County |
| Oasis Continuation High school |
Fresno County |
| Ocean Shores Continuation High School |
San Diego County |
| Ocean View High School |
Orange County |
| Oceana High School |
San Mateo County |
| Oceanside High School |
San Diego County |
| Odyssey High School |
Los Angeles County |
| Olympian High School |
San Diego County |
| Olympic High School |
Contra Costa County |
| Ontario Christian High School |
San Bernardino County |
| Ontario High School |
San Bernardino County |
| Opportunity - Owens Valley High School |
Inyo County |
| Options for Youth - Victorville Charter School |
San Bernardino County |
| Orange Cove High School |
Fresno County |
| Orange Glen High School |
San Diego County |
| Orange Grove High School |
Riverside County |
| Orange High School |
Orange County |
| Orange Lutheran High School |
Orange County |
| Orange Vista High School |
Riverside County |
| Orangewood High School |
San Bernardino County |
| Orcutt Academy High School |
Santa Barbara County |
| Orestimba High School |
Stanislaus County |
| Orinda Academy |
Contra Costa County |
| Orion Academy |
Contra Costa County |
| Orland High School |
Glenn County |
| Orosi High School |
Tulare County |
| Oroville Community Day School |
Butte County |
| Oroville High School |
Butte County |
| Ortega Continuation High School |
Riverside County |
| Orthopaedic Hospital Medical Magnet High School |
Los Angeles County |
| Oscar De La Hoya Animo Charter High School |
Los Angeles County |
| Otay Ranch Senior High School |
San Diego County |
| OUSD Community Day School |
Orange County |
| Overfelt High School |
Santa Clara County |
| Owens Valley High School |
Inyo County |
| Owensmouth Continuation School |
Los Angeles County |
| Oxbow School |
Napa County |
| Oxford Academy |
Orange County |
| Oxnard High School |
Ventura County |
| Pacheco High School |
Merced County |
| Pacific Beach High School |
San Luis Obispo County |
| Pacific Coast High School |
Orange County |
| Pacific Crest Academy - ESUHSD |
El Dorado County |
| Pacific Grove High School |
Monterey County |
| Pacific High School |
Ventura County |
| Pacific High School |
San Bernardino County |
| Pacific Lutheran High School |
Los Angeles County |
| Pacifica Christian High School |
Los Angeles County |
| Pacifica Christian High School |
Orange County |
| Pacifica High School |
Orange County |
| Pacifica High School |
Ventura County |
| Pajaro Valley High School |
Santa Cruz County |
| Palisade Glacier Continuation High School |
Inyo County |
| Palisades Charter High School |
Los Angeles County |
| Palisades Continuation High School |
Napa County |
| Palm Desert High School |
Riverside County |
| Palm Springs High School |
Riverside County |
| Palma High School |
Monterey County |
| Palmdale High School |
Los Angeles County |
| Palo Alto High School |
Santa Clara County |
| Palo Alto Preparatory School |
Santa Clara County |
| Palo Verde Valley High School |
Riverside County |
| Paloma Valley High School |
Riverside County |
| Palomar Continuation High School |
San Diego County |
| Palomares Academy of Health Sciences |
Los Angeles County |
