| Beach Street Middle School | New York | 6-8 | Suburban |
| Belmont Ridge Middle School | Virginia | 6-8 | Suburban |
| Cave Spring Middle School | Virginia | 6-8 | Suburban |
| Central Middle School | Georgia | 6-8 | Rural |
| Crayton Middle School | South Carolina | 6-8 | Urban |
| Dorseyville Middle School | Pennsylvania | 6-8 | Suburban |
| Douglas Middle School | Wyoming | 6-8 | Rural |
| Gemini Middle School | Illinois | 6-8 | Suburban |
| Gilbert Middle School | Iowa | 6-8 | Suburban |
| Girls Preparatory School | Tennessee | 6-12 | Urban |
| Hidden Valley Middle School | Virginia | 6-8 | Suburban |
| JL Simpson Middle School | Virginia | 6-8 | Suburban |
| Kamehameha Schools | Hawaii | 7-8 | Urban |
| Mattawan Middle School | Michigan | 6-8 | Rural |
| Phoenix Middle School | Ohio | 7-8 | Suburban |
| R.L. Stevenson Middle School | Hawaii | 6-8 | Urban |
| Readington Middle School | New Jersey | 6-8 | Suburban |
| Ridgeview Charter Middle School | Georgia | 6-8 | Suburban |
| Schoenbar Middle School | Alaska | 7-8 | Rural |
| Smyrna Middle School | Tennessee | 6-8 | Suburban |
| South View Middle School | Minnesota | 6-8 | Suburban |
| Tomahawk Creek Middle School | Virginia | 6-8 | Suburban |
| Tybee Island Maritime Academy | Georgia | K-8 | Suburban |
| Watertown Middle School | South Dakota | 7-8 | Rural |
| Willard Middle School | Virginia | 6-8 | Suburban |
| Winston Campus Jr. High School | Illinois | 7-8 | Suburban |