| | | | |
| Albany HS | C | | Bay Area Science Olympiad | Albany USD |
| Albany MS | B | | Bay Area Science Olympiad | Albany USD |
| Alta Sierra | B | | Fresno County Regional Science Olympiad | Clovis Unified School District |
| American HS | C | | Bay Area Science Olympiad | Fremont USD |
| Arden MS | B | | Sacramento Regional Science Olympiad | San Juan Unified School Disrict |
| Blaker Kinser JHS | B | | Stanislaus County Science Olympiad | Ceres Unified School District |
| Canyon MS (Bay Area) | B | | Bay Area Science Olympiad | Castro Valley USD |
| Castro Valley HS | C | | Bay Area Science Olympiad | Castro Valley USD |
| Chaboya MS | B | 1 | Santa Clara County Regional Science Olympiad | Evergreen School District |
| Clark | B | | Fresno County Regional Science Olympiad | Clovis Unified School District |
| Clovis North | C | | Fresno County Regional Science Olympiad | Clovis Unified School District |
| Clovis West | C | | Fresno County Regional Science Olympiad | Clovis Unified School District |
| Computech | B | | Fresno County Regional Science Olympiad | Fresno Unified School District |
| Creekside MS | B | | Bay Area Science Olympiad | Castro Valley USD |
| Davis Senior HS | C | | Sacramento Regional Science Olympiad | Davis Joint Unified School District |
| Downey HS | C | | Stanislaus County Science Olympiad | Modesto City Schools |
| Edison | C | | Fresno County Regional Science Olympiad | Fresno Unified |
| Enochs HS | C | | Stanislaus County Science Olympiad | Modesto USD |
| Evelyn Costa Elementary | B | 1 | San Joaquin County | Lammersville Unified School District |
| Franklin HS | C | | San Joaquin County | Stockton USD |
| Golden Hills School | B | 1 | Sacramento Regional Science Olympiad | Private |
| Golden West | C | | Fresno County Regional Science Olympiad | Visalia Unified School District |
| Granite Ridge | B | | Fresno County Regional Science Olympiad | Clovis Unified |
| Green Acres MS | B | | Fresno County Regional Science Olympiad | Visalia Unified School District |
| Gregori HS | C | | Stanislaus County Science Olympiad | Modesto City Schools |
| Hyde MS | B | 1 | Santa Clara County Regional Science Olympiad | Cupertino Union School District |
| Kennedy MS | B | | Santa Clara County Regional Science Olympiad | Cupertino Union School District |
| La Loma JHS | B | | Stanislaus County Science Olympiad | Modesto City Schools |
| Laguna Creek HS | C | | Sacramento Regional Science Olympiad | Elk Grove Unified SD |
| Live Oak MS | B | | Tulare County | Tulare City School District |
| Lodi High | C | | San Joaquin County | Lodi USD |
| Lynbrook HS | C | | Santa Clara County Regional Science Olympiad | Fremont Union High School |
| Miller MS | B | | Santa Clara County Regional Science Olympiad | Cupertino Union School District |
| Mira Loma HS | C | | Sacramento Regional Science Olympiad | San Juan Unified School District |
| Mission San Jose HS | C | | Bay Area Science Olympiad | Fremont USD |
| Monta Vista HS | C | 1 | Santa Clara County Regional Science Olympiad | Fremont Union High School District |
| Mountain House HS | C | | San Joaquin County | Lammersville Unified School District |
| Mountain View HS | C | | Santa Clara County Regional Science Olympiad | Mountain View Los Altos High School District |
| Oakdale JHS | B | | Stanislaus County Science Olympiad | OJUSD |
| Orosi HS | C | | Tulare County | Cutler Orosi Joint Unified |
| Palo Alto HS | C | 1 | Santa Clara County Regional Science Olympiad | Palo Alto USD |
| Palo Verde | B | | Tulare County | Palo Verde Union Elementary |
| Peter Hansen ES | B | | San Joaquin County | Lammersville Unified |
| Questa | B | | San Joaquin County | Lammersville USD |
| Redwood HS | C | 1 | Fresno County Regional Science Olympiad | Visalia Unified School District |
| Ridgeview MS | B | | Tulare County | Visalia Unified School District |
| Sutter MS | B | | Sacramento Regional Science Olympiad | Folsom Cordova Unified School District |
| Thornton MS | B | 1 | Bay Area Science Olympiad | Fremont USD |
| Tokay HS | C | | San Joaquin County | Lodi Unified School District |
| Turlock HS | C | | Stanislaus County Science Olympiad | Turlock Unified School District |
| Ukiah HS | C | | Sacramento Regional Science Olympiad | Ukiah Unified School District |
| University (Fresno) | C | | Fresno County Regional Science Olympiad | Fresno Unified School District |
| University Prep HS (Tulare) | C | | Tulare County | Tulare County Office of Education |
| Ustach MS | B | | Stanislaus County Science Olympiad | Sylvan Union School District |
| Wicklund Elementary | B | | San Joaquin County | Lammersville Unified |
| Winston Churchill MS | B | | Sacramento Regional Science Olympiad | San Juan Unified School District |