| Aliamanu Middle School | Hawaii | 7-8 | Suburban |
| Beach Street Middle School | New York | 6-8 | Suburban |
| Benjamin Tasker Middle School | Maryland | | Suburban |
| Central Middle School | Georgia | 6-8 | Rural |
| Cloverleaf Middle School | Ohio | 6-8 | Rural |
| Ewa Makai Middle School | Hawaii | 6-8 | Suburban |
| Franklin Avenue Middle School | New Jersey | 6-8 | Suburban |
| Gemini Middle School | Illinois | 6-8 | Suburban |
| Greenwood College School | Ontario | 7-12 | Urban |
| JL Simpson Middle School | Virginia | 6-8 | Suburban |
| Learning Community Charter School | New Jersey | PreK-8 | Urban |
| Marshall Middle School | Pennsylvania | 6-8 | Suburban |
| Miguel Juarez Middle School | Illinois | 6-8 | Urban |
| Moanalua Middle School | Hawaii | 7-8 | Suburban |
| New Hope-Solebury Middle School | Pennsylvania | 6-8 | Suburban |
| Phoenix Middle School | Ohio | 7-8 | Suburban |
| R.L. Stevenson Middle School | Hawaii | 6-8 | Urban |
| Ridgedale Middle School | New Jersey | 6-8 | Suburban |
| Seneca Ridge Middle School | Virginia | 6-8 | Suburban |
| Seven Hills School | Virginia | 5-8 | Urban |
| Smart’s Mill Middle School | Virginia | 6-8 | Suburban |
| South View Middle School | Minnesota | 6-8 | Suburban |
| Tomahawk Creek Middle School | Virginia | 6-8 | Suburban |
| Trafalgar School for Girls | Québec | 7-11 | Urban |
| Valley View Middle School | New Jersey | 5-8 | Suburban |
| Watertown Middle School | South Dakota | 7-8 | Rural |
| Watson Mountain Middle School | Virginia | 6-8 | Suburban |
| York Suburban Middle School | Pennsylvania | 6-8 | Suburban |