| Aliamanu Middle School | Hawaii | 7-8 | Suburban |
| Beach Street Middle School | New York | 6-8 | Suburban |
| Cave Spring Middle School | Virginia | 6-8 | Suburban |
| Central Middle School | Georgia | 6-8 | Rural |
| Custer Baker Intermediate School | Indiana | 5-6 | Suburban |
| Gemini Middle School | Illinois | 6-8 | Suburban |
| Greenbrier Middle School | Arkansas | 6-7 | Rural |
| Hidden Valley Middle School | Virginia | 6-8 | Suburban |
| JL Simpson Middle School | Virginia | 6-8 | Suburban |
| Lee County Middle School West | Georgia | 6-8 | Rural |
| Marietta Sixth Grade Academy | Georgia | 6 | Suburban |
| McCulloch Intermediate School | Texas | 5-6 | Suburban |
| Moanalua Middle School | Hawaii | 7-8 | Suburban |
| R.L. Stevenson Middle School | Hawaii | 6-8 | Urban |
| Ridgedale Middle School | New Jersey | 6-8 | Suburban |
| Sheridan School | District of Columbia | K-8 | Urban |
| Tomahawk Creek Middle School | Virginia | 6-8 | Suburban |
| Udall Road Middle School | New York | 6-8 | Suburban |
| Watertown Middle School | South Dakota | 7-8 | Rural |
| Woodstock Union Middle School | Vermont | 7-8 | Rural |