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| Arnold O. Beckman High School | C | 2 | 2 | Orange County | Tustin Unified | Orange County | CA |
| Brightwood Elementary School | B | 3 | | | Alhambra Unified School District | Los Angeles | CA |
| Canyon Crest Academy | C | 4 | 4 | SDSO | San Dieguito Union High School District | San Diego | CA |
| Canyon High School | C | 2 | 2 | SoCal Joint Regional | Orange Unified | Orange | CA |
| Chaparral High School | C | 3 | | SoCal Joint Regional | Temecula Valley Unified School District | Riverside | CA |
| Dana Middle School | B | 3 | 3 | SoCal Joint Regional | Arcadia Unified School District | Los Angeles | CA |
| Diamond Bar High School | C | 2 | | SoCal Joint Regional | Walnut Valley Unified School District | Los Angeles County | CA |
| El Rancho Charter | B | 2 | 2 | SoCal Joint Regional | Orange Unified | Orange | CA |
| Glendale High School | C | 1 | | | Glendale Unified | Los Angeles | CA |
| Great Oak High School | C | 4 | | Inland Empire | Temecula Valley USD | Riverside | CA |
| John W. North High School | C | 2 | | SoCal Joint Regional | Riverside Unified School District | Riverside | CA |
| Kennedy Middle School | B | 4 | | Santa Clara County Regional Science Olympiad | Cupertino Union School District | Santa Clara | CA |
| Mark Keppel High School | C | 3 | | SoCal Joint Regional | Alhambra | Los Angeles | CA |
| Martin Luther King High School | C | 2 | | Inland Empire Regional Science Olympiad | Riverside Unified School District | Riverside | CA |
| Mesa Verde Middle School | B | 4 | | SDSO | Poway Unified School District | San Diego | CA |
| Northwood High School | C | 2 | | Orange County Regionals | Irvine Unified School District | Orange County | CA |
| Ocean Air Elementary | B | 4 | | SDSO | Del Mar Union School District | San Diego | CA |
| Pacific Academy - Irvine | C | 1 | 1 | | Irvine Unified School District (Private) | Orange County | CA |
| Pacific Trails Middle School | B | 4 | 4 | SDSO | San Dieguito Union High School District | San Diego | CA |
| Palm Desert High School | C | 1 | | | Desert Sands Unified School District | Riverside | CA |
| Riverside STEM High School | C | 2 | | Inland Empire Regional | Riverside Unified School District | Riverside | CA |
| Sage Hill School | C | 1 | 1 | | Independent | Orange | CA |
| San Marino High School | C | 2 | | SoCal Joint Regional | San Marino Unified School District | Los Angeles | CA |
| Scripps Ranch High School | C | 2 | | SDSO | San Diego Unified School District | San Diego | CA |
| South Pasadena High School | C | 3 | | SoCal Joint Regional | South Pasadena Unified School District | Los Angeles | CA |
| Sunny Hills High School | C | 1 | | SoCal Joint Regional | Fullerton Joint Union High School District | Orange County | CA |
| The Palmdale Aerospace Academy | C | 1 | | SoCal Joint Regional | The Palmdale Aerospace Academy | Los Angeles | CA |
| Torrey Pines High School | C | 1 | 1 | SDSO | San Dieguito Union High School District | San Diego | CA |
| Valencia High School (OC) | C | 2 | | SoCal Joint Regional | Placentia-Yorba Linda Unified School District | Orange | CA |
| West High School | C | 2 | | PCC | Torrance Unified School District | Los Angeles | CA |
| Westpark Elementary | B | 3 | | Orange County Regional Science Olympiad | Irvine Unified School District | Orange | CA |
| Westview High School | C | 4 | 4 | SDSO | Poway Unified School District | San Diego | CA |