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| BASIS MS (San Jose) | B | 1 | | Santa Clara County Regional Science Olympiad | Private | CA | |
| Brookwood High School | C | 1 | 1 | Georgia State University Dunwoody Div C Regional | Gwinnett County Public Schools | GA | |
| Bullis Charter School | B | 2 | 2 | Santa Clara County Regional Science Olympiad | Bullis Charter District | CA | |
| Burbank High School | C | 1 | 1 | | Burbank Unified School District | CA | |
| Chadron Middle School | B | 1 | | | Chadron Public Schools | NE | |
| Challenger School- Ardenwood | B | 1 | | Alameda Regional Science Olympiad | Challenger School | CA | |
| Dartmouth Middle School | B | 2 | 2 | Santa Clara County Regional Science Olympiad | Union School District | CA |
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| Dougherty Valley High School | C | 3 | 3 | Bay Area Regional Science Olympiad | San Ramon Valley USD | CA | |
| Dulles High School | C | 2 | | | Fort Bend ISD | TX |
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| Edgewood High School | C | 1 | 1 | SoCal Joint Regional | West Covina Unified | CA | |
| Edgewood Middle School | B | 1 | 1 | SoCal Joint Regional | West Covina Unified | CA | |
| Egan Junior High School | B | 1 | | Santa Clara County Regional Science Olympiad | Los Altos School District | CA |
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| Evergreen Middle School | B | 1 | 1 | Regional - Northwest B #1 | Lake Washington School District | WA |
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| Farragut High School | C | 2 | 2 | East Tennessee State University Regional | Knox County Schools | TN |
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| Flintridge Sacred Heart Academy | C | 1 | 1 | SoCal Joint Regional | Independent | CA | |
| Glen A. Wilson High School | C | 2 | 2 | SoCal Joint Regional | Hacienda La Puente Unified | CA | |
| Granite Ridge Intermediate | B | 4 | | Fresno County Regional Science Olympiad | Clovis Unified School District | CA | |
| Highlands Intermediate School | B | 4 | | | Hawaii DOE Leeward District | HI | |
| Kenston High School | C | 2 | | Northeast & Northern Ohio Regional Tournament | Kenston Local Schools | OH | |
| Maret School | C | 2 | 2 | | Independent School | DC | |
| Marin Academy | C | 1 | 1 | Bay Area Regional Science Olympiad | NA - private | CA | |
| Marquette University HS | C | 1 | | Southeast WI | Private | WI |
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| Natrona County High School | C | 2 | 2 | | Natrona County School District | WY | |
| Oakdale HS | C | 1 | 1 | Stanislaus County Science Olympiad | Oakdale Joint Unified School District | CA | |
| Orlando Science Middle School | B | 1 | 1 | Central Regional at Osceola High School | Orange | FL |
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| Osbourn Park High School | C | 2 | 2 | | Prince William County Public Schools | VA | |
| Pearl City High School | C | 3 | 3 | 2022 HSSO Leeward Regional | Leeward District | HI | |
| River Islands High School | C | 3 | 3 | | Banta Unified School District | CA | |
| Riverside High School | C | 3 | 3 | | Loudoun County Public Schools | VA | |
| Scripps Ranch High School | C | 2 | 2 | SDSO | San Diego Unified School District | CA | |
| Stephen F. Austin High School | C | 2 | 2 | Houston Regional | Fort Bend ISD | TX |
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| Stoller Middle School | B | 1 | 1 | Oregon Science Olympiad | Beaverton School District | OR |
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| Sunset High School | C | 1 | 1 | Oregon Science Olympiad | Beaverton School District | OR | |
| Timberline Middle School | B | 1 | 1 | Regional - NW (Division B)-RAHS | Lake Washington School District | WA |
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| Westfield High School | C | 2 | 2 | | Fairfax County Public School | VA | |