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| Alston Ridge Middle School | B | 2 | 2 | | Wake County Public School System | NC |
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| Amelia Earhart Middle School | B | 1 | 1 | SoCal Joint Regional | Riverside Unified | CA | |
| Apple Valley HS | C | 1 | 2 | SoCal Joint Regional | Apple Valley Unified | CA | |
| BASIS MS | B | 1 | 1 | Santa Clara County Regional Science Olympiad | San Jose | CA | |
| Bedford Middle School | B | 2 | 2 | n/a | Westport Public Schools | CT | |
| Beverly Hills High School | C | 1 | 1 | SoCal Joint Regional | Beverly Hills Unified School District | CA | |
| Bonham | B | 3 | 3 | University of Texas Regional | Amarillo ISD | TX | |
| Bothell High School | C | 1 | 1 | Eastern C Regional | Northshore | WA | |
| Calumet High School | C | 1 | 1 | Mid Hudson Regional C | CLK Public Schools | MI | |
| Canyon MS (Bay Area) | B | 2 | 2 | Northern California Science Olympiad | Castro Valley Unified School District | CA | |
| Castro Valley High School | C | 2 | 2 | Northern California Science Olympiad | Castro Valley Unified School District | CA | |
| Cerritos High School | C | 2 | 2 | SoCal Joint Regional | ABC Unified School District | CA | |
| Coleytown Middle School | B | 1 | 1 | | Westport CT | CT | |
| Creekside Middle School | B | 2 | 2 | Northern California Science Olympiad | Castro Valley Unified School District | CA | |
| Davidson Academy Middle School | B | 1 | | Nevada Science Olympiad | Washoe County | NV | |
| Davidson Academy of Nevada | C | 2 | 2 | Nevada Science Olympiad | Washoe County | NV | |
| Denmark High School | C | 1 | 1 | Georgia C Placeholder - Not Competing | Forsyth County | GA | |
| Early College at Guilford | C | 2 | 2 | | Guilford County | NC | |
| Eastern Camden County Regional HS | C | 1 | 1 | New Jersey Science Olympiad | Eastern Camden County Regional High School District | NJ | |
| Edgewood High School | C | 1 | 2 | SoCal Joint Regional | West Covina Unified | CA | |
| Edgewood Middle School | B | 1 | 1 | SoCal Joint Regional | West Covina Unified | CA | |
| Farragut High School | C | 2 | 2 | East Tennessee State University Regional | Knox County Schools | TN | |
| Flintridge Sacred Heart Academy - La Canada Flintridge, CA | C | 1 | 1 | | Independent School | CA | |
| Fremont High School | C | 2 | 2 | Santa Clara County Regional Science Olympiad | Fremont Union High School District | CA | |
| Fulshear High School | C | 1 | 1 | Gulf Coast | Lamar Consolidated ISD | TX | |
| Gardner Middle School | B | 2 | 2 | SoCal Joint Regional | Temecula Valley Unified | CA | |
| Grand County High School | C | 1 | 1 | Utah Science Olympiad | Grand | UT | |
| Hampden Charter School of Science - West | C | 1 | 1 | Massachusetts State Science Olympiad | Hampden Charter | MA | |
| Hampden Charter School of Science East | B | 1 | 1 | Massachusetts State Science Olympiad | Hampden Charter School of Science | MA | |
| Hampden Charter School of Science East | C | 1 | 1 | Massachusetts State Science Olympiad | Hampden Charter School of Science | MA | |
| Homeschool Science Colorado | B | 2 | 2 | Colorado Southern Regional | Homeschool | CO |
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| Homeschool Science Colorado | C | 1 | 1 | Colorado Southern Regional | Homeschool | CO |
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| Irvine High School | C | 1 | | SoCal Joint Regional | Irvine Unified School District | CA |
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| J. R. Fugett Middle School | B | 2 | 2 | Southeast Regional at PSU Abington | West Chester Area School District | PA | |
| Jay M. Robinson | B | 3 | 3 | | Charlotte Mecklenburg | NC |
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| Jeffrey Trail Middle School | B | 3 | 3 | SoCal Joint Regional | Irvine Unified School District | CA | |
| Kearney | B | 2 | 2 | Region 3 B/C | Kearney R1 | MO | |
| Kennedy Middle School | B | 4 | 4 | Northern California Science Olympiad | Cupertino Union School District | CA |
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| Lambert High School | C | 2 | | UNG - Dahlonega C Regional | Forsyth County | GA |
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| Los Alamitos High School | C | 2 | 2 | SoCal Joint Regional | Los Alamitos Unified School District | CA | |
| Lynbrook HS | C | 2 | 2 | Northern California Science Olympiad | Fremont Union High School | CA | |
| Marshall Middle School | B | 1 | | SDSO | San Diego Unified School District | CA | |
| Martin Luther King High School | C | 2 | 2 | SoCal Joint Regional | Riverside Unified School District | CA | |
| Maryville High School | C | 1 | 1 | East Tennessee State University Regional | Maryville City Schools | TN | |
| Menomonie Middle School | B | 4 | 4 | WI Region 1 | Menomonie School District | WI | |
| Miller Middle School | B | 1 | 1 | Northern California Science Olympiad | Cupertino Union School District | CA |
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| National Cathedral School Div. C | C | 1 | 1 | Western Maryland Region; Div. C | Independent school | DC | |
| Northwood High School | C | 2 | 2 | SoCal Joint Regional | Irvine Unified School District | CA | |
| Osceola Science Charter School | B | 2 | 2 | Georgia B placeholder | The School District of Osceola County | FL |
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| Pacific Academy Irvine | C | 1 | 1 | SoCal Joint Regional | Irvine | CA | |
| Pacifica Christian High School | C | 1 | 1 | BirdSO Invitational | Private | CA | |
| Plainfield North High School | C | 2 | 2 | Illinois Regional | Plainfield School District 202 | IL |
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| Quail Valley MS | B | 2 | 2 | SoCal Joint Regional | Snowline Unified | CA | |
| Questa | B | 2 | 2 | Northern California Science Olympiad | Lammersville USD | CA | |
| Red River High School | C | 1 | 1 | Valley City State University Regional Science Olympiad | Grand Forks Public Schools | ND | |
| Redmond Middle School | B | 4 | | NW B Division Regional | Lake Washington School District | WA | |
| Robert Cushman Murphy Junior High School | B | 2 | 2 | | Three Village CSD | NY | |
| Rockford Auburn High School | C | 2 | 2 | Illinois Regional | RPS 205 | IL | |
| Saddle River Day School | B | 1 | 1 | | Independent School | NJ | |
| Saddle River Day School | C | 1 | 1 | | Independent School | NJ | |
| Santa Teresa High School | C | 1 | 1 | Santa Clara County Regional Science Olympiad | East Side Union High School District | CA |
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| STEAM HEAT High School | C | 1 | 1 | Southwest Tennessee Community College Regional | West TN Homeschooling | TN | |
| STEAMHeat High School | B | 3 | 1 | Southwest Tennessee Community College Regional | Homeschooling | TN | |
| Stoller Middle School | B | 1 | 1 | Oregon Science Olympiad | Beaverton School District | OR |
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| The Palmdale Aerospace Academy | B | 1 | 1 | SoCal Joint Regional | The Palmdale Aerospace Academy | CA | |
| The Science Academy STEM Magnet | C | 1 | 1 | SoCal Joint Regional | Los Angeles Unified School District | CA | |
| Thornton Junior High School | B | 3 | 3 | Bay Area Science Olympiad | Fremont Unified School District | CA | |
| Timberline Middle School | B | 1 | 1 | NW B Division Regional | Lake Washington School District | WA |
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| Tower Heights Middle School | B | 1 | 1 | Western Ohio Regional Tournament | Centerville City Schools | OH | |
| Vail Ranch Middle School | B | 2 | 2 | SoCal Joint Regional | Temecula Valley USD | CA | |
| Vista Murrieta High School | C | 2 | 2 | SoCal Joint Regional | Murrieta Unified School District | CA | |
| Wachter Middle School | B | 2 | 2 | Region 1 | Bismarck Public Schools | ND |
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| Warwick High School | C | 1 | 1 | Central Region at Millersville University | Warwick School District | PA | |
| Warwick Middle School | B | 2 | 2 | Central Region at Millersville University | Warwick School District | PA | |
| Wasatch High School | C | 1 | 1 | Utah Science Olympiad | Wasatch School District | UT | |
| Washington Middle School | B | 1 | 1 | Michigan Science Olympiad Region 3 | CLK Public Schools | MI | |
| West High School | C | 2 | 2 | RHC | Torrance Unified School District | CA |
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| Winston Churchill High School | C | 2 | 2 | Western Maryland Region; Div. C | Montgomery County Public Schools | MD | |
| Worcester Tech HS | C | 2 | 2 | Eastern Maryland Region; Div. C | Worcester County Public School | MD | |
| Wyoming High school | C | 1 | 1 | Southwestern Ohio Science Olympiad | Wyoming City Schools | OH | |