| Brambleton Middle School | Virginia | 6-8 | Suburban |
| Cave Spring Middle School | Virginia | 6-8 | Suburban |
| Dorseyville Middle School | Pennsylvania | 6-8 | Suburban |
| Ewa Makai Middle School | Hawaii | 6-8 | Suburban |
| Gilbert Middle School | Iowa | 6-8 | Suburban |
| Hidden Valley Middle School | Virginia | 6-8 | Suburban |
| JL Simpson Middle School | Virginia | 6-8 | Suburban |
| Kamehameha Schools | Hawaii | 7-8 | Urban |
| Lee County Middle School West | Georgia | 6-8 | Rural |
| Mattawan Middle School | Michigan | 6-8 | Rural |
| Readington Middle School | New Jersey | 6-8 | Suburban |
| Ridgeview Charter Middle School | Georgia | 6-8 | Suburban |
| Seaman Middle School | Kansas | 7-8 | Rural |
| South Orangetown Middle School | New York | 6-8 | Suburban |
| South View Middle School | Minnesota | 6-8 | Suburban |
| Watertown Middle School | South Dakota | 7-8 | Rural |