| Ashland-Greenwood Middle School | Nebraska | 6-8 | Rural |
| Austin Preparatory School | Massachusetts | 6-8 | Suburban |
| Belmont Ridge Middle School | Virginia | 6-8 | Suburban |
| Benjamin Tasker Middle School | Maryland | | Suburban |
| Blake Bass Middle School | Georgia | 6-8 | Rural |
| Cave Spring Middle School | Virginia | 6-8 | Suburban |
| Central Middle School | Georgia | 6-8 | Rural |
| Cloverleaf Middle School | Ohio | 6-8 | Rural |
| Coastal Middle School | Georgia | 6-8 | Suburban |
| Corbett Preparatory School of IDS | Florida | PreK-8 | Suburban |
| Crayton Middle School | South Carolina | 6-8 | Urban |
| Eagle Ridge Middle School | Virginia | | Suburban |
| Farmwell Station Middle School | Virginia | 6-8 | Suburban |
| Franklin Avenue Middle School | New Jersey | 6-8 | Suburban |
| Gemini Middle School | Illinois | 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 |
| Laveen Elementary School | Arizona | PreK-8 | Urban |
| Lunsford Middle School | Virginia | 6-8 | Suburban |
| Mattawan Middle School | Michigan | 6-8 | Rural |
| Mayfield Middle School | Ohio | 6-8 | Suburban |
| New Hope-Solebury Middle School | Pennsylvania | 6-8 | Suburban |
| Pahoa High and Intermediate School | Hawaii | 7-12 | Rural |
| Phoenix Middle School | Ohio | 7-8 | Suburban |
| Ridgedale Middle School | New Jersey | 6-8 | Suburban |
| Sayville Middle School | New York | 6-8 | Suburban |
| Seaford Middle School | New York | 6-8 | Suburban |