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| Austin Area Homeschool | C | 1 | 1 | | Homeschool | TX |
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| Canyon MS (Bay Area) | B | 2 | 2 | Northern California Science Olympiad | Castro Valley Unified School District | CA | |
| Castro Valley High School | C | 4 | 4 | Northern California Science Olympiad | Castro Valley Unified School District | CA | |
| Cinco Ranch High School | C | 2 | 2 | Ft. Worth Regional | Katy ISD | TX |
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| Clayton Valley Charter High School | C | 1 | 1 | Bay Area Science Olympiad | Clayton Valley Charter High School | CA |
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| Creekside Middle School | B | 2 | 2 | Northern California Science Olympiad | Castro Valley Unified School District | CA | |
| Cumberland Valley High School | C | 3 | 3 | Central Region at Millersville University | Cumberland Valley School District | PA |
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| Del Norte High School | C | 1 | 1 | SDSO | Poway Unified School District | CA |
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| Eagan High School | C | 3 | 3 | Minnesota Science Olympiad | Rosemount-Apple Valley-Eagan ISD 196 | MN | |
| Eagle View Middle School | B | 3 | 3 | Central Region at Millersville University | Cumberland Valley School District | PA | |
| Early College at Guilford | C | 3 | 3 | | Guilford County | NC | |
| Fairmont Private Schools - Anaheim Hills | B | 3 | 3 | SoCal Joint Regional | Private | CA |
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| Grandville Middle School | B | 2 | 2 | | Grandville Public Schools | MI | |
| Hanalani Schools | C | 1 | 1 | | HAIS | HI | |
| Hanalani Schools | B | 1 | 1 | | HAIS | HI | |
| Highlands Intermediate School | B | 4 | 4 | 2022 HSSO Leeward Regional | Leeward District | HI | |
| Hilo Intermediate School | B | 1 | 1 | HSSO Div B Regional | Hilo-Waiakea Complex | HI | |
| Iolani School | C | 5 | 5 | 2023 HSSO Leeward Regional | Oahu | HI | |
| Iolani School | B | 4 | 4 | 2022 HSSO Leeward Regional | Oahu | HI |
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| Janesville Junior-Senior High School | C | 1 | 1 | Gold | Janesville Consolidated School District | IA | |
| Janesville Junior-Senior High School | B | 2 | 2 | Gold | Janesville Consolidated School District | IA | |
| Jeffrey Trail Middle School | B | 3 | 3 | SoCal Joint Regional | Irvine Unified School District | CA | |
| John Jay High School East Fishkill | C | 3 | 3 | New York - Mid-Hudson Region | Wappingers Central School District | NY | |
| Kennedy Middle School | B | 6 | 6 | Northern California Science Olympiad | Cupertino Union School District | CA |
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| Mililani High School | C | 2 | 2 | 2022 HSSO Leeward Regional | Leeward | HI |
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| Northwood High School | C | 2 | 2 | SoCal Joint Regional | Irvine Unified School District | CA | |
| Orange County School of the Arts | B | 4 | 4 | | Independent Charter | CA | |
| Paul J. Gelinas Junior High School | B | 3 | 3 | | Three Village Central School District | NY | |
| Pearl City High School | C | 3 | 3 | 2022 HSSO Leeward Regional | Leeward District | HI | |
| Sierra Vista Middle School | B | 8 | 8 | So Cal Joint | IUSD | CA |
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| South Forsyth High School | C | 4 | 4 | UNG - Dahlonega C Regional | Forsyth County | GA | |
| Spruce Creek High School | C | 3 | 3 | Eastern Regional at Embry Riddle Aeronautical University | Volusia County School District | FL |
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| Stoller Middle School | B | 1 | 1 | Oregon Science Olympiad | Beaverton School District | OR |
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| Syosset HS | C | 4 | 4 | Lake Erie/Niagara | Syosset | NY | |
| The Bronx High School of Science | C | 1 | 1 | | New York City | NY | |
| Timberline Middle School | B | 1 | 1 | NW B Division Regional | Lake Washington School District | WA |
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| Tracy Joint Union High School | C | 2 | 2 | San Joaquin County Science Olympiad B/C | Tracy Joint Union School District | CA | |
| University Laboratory School | C | 1 | 1 | 2022 HSSO Leeward Regional | Hawaii | HI | |
| University Laboratory School | B | 2 | 2 | 2022 HSSO Leeward Regional | Hawaii | HI | |
| Venado Middle School | B | 1 | 1 | | Irvine Unified School District | CA |
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