| Aliamanu Middle School | Hawaii | 7-8 | Suburban |
| Ashland-Greenwood Middle School | Nebraska | 6-8 | Rural |
| Belmont Ridge Middle School | Virginia | 6-8 | Suburban |
| Benjamin Tasker Middle School | Maryland | | Suburban |
| Blake Bass Middle School | Georgia | 6-8 | Rural |
| Brambleton Middle School | Virginia | 6-8 | Suburban |
| Cave Spring Middle School | Virginia | 6-8 | Suburban |
| Central Middle School | Georgia | 6-8 | Rural |
| Cloverleaf Middle School | Ohio | 6-8 | Rural |
| Community School | Virginia | 5-8 | Rural |
| Corbett Preparatory School of IDS | Florida | PreK-8 | Suburban |
| Crayton Middle School | South Carolina | 6-8 | Urban |
| Dorseyville Middle School | Pennsylvania | 6-8 | Suburban |
| Douglas Middle School | Wyoming | 6-8 | Rural |
| Farmwell Station Middle School | Virginia | 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 |
| Kamehameha Schools | Hawaii | 7-8 | Urban |
| Laveen Elementary School | Arizona | PreK-8 | Urban |
| Learning Community Charter School | New Jersey | PreK-8 | Urban |
| Lee County Middle School East | Georgia | 6-8 | Rural |
| Lunsford Middle School | Virginia | 6-8 | Suburban |
| Madison Country Day School | Wisconsin | PreK-12 | Rural |
| Mattawan Middle School | Michigan | 6-8 | Rural |
| Mattoon Middle School | Illinois | 6-8 | Rural |
| Mayfield Middle School | Ohio | 6-8 | Suburban |
| New Hope-Solebury Middle School | Pennsylvania | 6-8 | Suburban |
| Niu Valley Middle School | Hawaii | 6-8 | Suburban |
| Oceanside Middle School | New York | 7-8 | Suburban |