| | | | | | |
| Bridgewater Raritan Regional High School | C | 1 | 1 | | Bridgewater Raritan Regional School District | NJ |
| California Academy of Mathematics and Science | C | 1 | | SoCal Joint Regional | Long Beach Unified School District | CA |
| Coppell High School | C | 2 | 2 | | Coppell Independent School District | TX |
| Davidson Academy | C | 1 | | Nevada Science Olympiad | Da | NV |
| Example | C | 1 | | | Example District | CA |
| Gunn High School | C | 2 | 2 | Santa Clara County Regional Science Olympiad | Palo Alto Unified School District | CA |
| Interlake High School | C | 3 | 3 | Regional - Northwest (Division C)-RAHS | Bellevue School District | WA |
| John P Stevens HS | C | 2 | 2 | New Jersey Science Olympiad | Edison Township Public Schools | NJ |
| Larchmont Charter School | C | 1 | 1 | SoCal Joint Regional | Los Angeles Unified | CA |
| Marquette University HS | C | 1 | | Southeast WI | Private | WI |
| Martin Luther King High School | C | 3 | 3 | Inland Empire Regional Science Olympiad | Riverside Unified School District | CA |
| Milpitas High School | C | 2 | 2 | Santa Clara County Regional Science Olympiad | Milpitas Unified School District | CA |
| Mountain House HS | C | 3 | 3 | San Joaquin County | Lammersville Unified School District | CA |
| Orange County School of the Arts | C | 2 | 2 | SoCal Joint Regional | independent charter | CA |
| Palm Desert High School | C | 1 | 1 | | Desert Sands Unified School District | CA |
| Palos Verdes High School | C | 2 | 2 | | Palos Verdes Peninsula Unified School District | CA |
| Redmond High School | C | 5 | 5 | Washington Science Olympiad NW C Regional | Lake Washington School District | WA |
| Riverside STEM High School | C | 3 | 3 | SoCal Joint Regional | Riverside Unified School District | CA |
| Stephen F. Austin High School | C | 1 | 1 | Houston Regional | Fort Bend ISD | TX |
| Tesla STEM High School | C | 5 | 5 | Regional - Northwest C #2 | Lake Washington School District | WA |
| The Frazer School | C | 2 | 2 | Northern Regional at The Frazier School | Private | FL |
| Valley Christian High School | C | 1 | 1 | Santa Clara County Regional Science Olympiad | Private | CA |