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| Avon High School | C | 1 | 1 | | Avon Public Schools | CT | |
| BASIS Cedar Park HS | C | 2 | 2 | TX | BASIS Charter School District | TX | |
| Benjamin N. Cardozo High School | C | 1 | 1 | | NYCDOE District 26 | NY | |
| Canton High School | C | 2 | 2 | | Canton, CT | CT | |
| Foothill High School | C | 2 | 2 | Alameda Regional Science Olympiad | Pleasanton USD | CA | |
| International Community School | C | 1 | 1 | Regional - Northwest C #2 | LWSD | WA |
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| Kelly Walsh High School | C | 2 | 2 | | Natrona County School District 1 | WY | |
| Maggie L. Walker Governor's School for Government and International Studies | C | 1 | 1 | | Governor's School | VA | |
| NYOS Charter School | C | 1 | 1 | University of Texas at Austin Regional | NYOS Charter School | TX | |
| Regis High School | C | 2 | 2 | | Private | NY | |
| South Windsor High School | C | 3 | 3 | | South Windsor High School | CT |
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| Staples High School | C | 2 | 2 | CT Regional 1 | Westport Public Schools | CT | |
| Wilton High School | C | 3 | 3 | | Wilton Public Schools | CT | |