| Belmont Ridge Middle School | Virginia | 6-8 | Suburban |
| Benjamin Tasker Middle School | Maryland | | Suburban |
| Blake Bass Middle School | Georgia | 6-8 | Rural |
| Central Middle School | Georgia | 6-8 | Rural |
| Chouteau Middle School | Oklahoma | 5-8 | Rural |
| Cloverleaf Middle School | Ohio | 6-8 | Rural |
| Coastal Middle School | Georgia | 6-8 | Suburban |
| Crayton Middle School | South Carolina | 6-8 | Urban |
| Custer Baker Intermediate School | Indiana | 5-6 | Suburban |
| Douglas Middle School | Wyoming | 6-8 | Rural |
| Farmwell Station Middle School | Virginia | 6-8 | Suburban |
| Franklin Avenue Middle School | New Jersey | 6-8 | Suburban |
| Gilbert Middle School | Iowa | 6-8 | Suburban |
| Greenbrier Middle School | Arkansas | 6-7 | Rural |
| Greenwood College School | Ontario | 7-12 | Urban |
| Gum Spring Middle School | Virginia | 6-8 | Suburban |
| JL Simpson Middle School | Virginia | 6-8 | Suburban |
| Kamehameha Schools | Hawaii | 7-8 | Urban |
| Laveen Elementary School | Arizona | PreK-8 | Urban |
| Lee County Middle School East | Georgia | 6-8 | Rural |
| Lee County Middle School West | Georgia | 6-8 | Rural |
| Marietta Sixth Grade Academy | Georgia | 6 | Suburban |
| Mattawan Middle School | Michigan | 6-8 | Rural |
| Mayfield Middle School | Ohio | 6-8 | Suburban |
| Moanalua Middle School | Hawaii | 7-8 | Suburban |
| New Hope-Solebury Middle School | Pennsylvania | 6-8 | Suburban |
| R.L. Stevenson Middle School | Hawaii | 6-8 | Urban |
| Ridgeview Charter Middle School | Georgia | 6-8 | Suburban |
| River Bend Middle School | Virginia | 6-8 | Suburban |
| Seaford Middle School | New York | 6-8 | Suburban |