| Beach Street Middle School | New York | 6-8 | Suburban |
| Brambleton Middle School | Virginia | 6-8 | Suburban |
| Cave Spring Middle School | Virginia | 6-8 | Suburban |
| Central Middle School | Georgia | 6-8 | Rural |
| Community School | Virginia | 5-8 | Rural |
| Gum Spring Middle School | Virginia | 6-8 | Suburban |
| Hudson Middle School | Ohio | 6-8 | Suburban |
| JL Simpson Middle School | Virginia | 6-8 | Suburban |
| Kaimukī Middle School | Hawaii | 6-8 | Suburban |
| Learning Community Charter School | New Jersey | PreK-8 | Urban |
| Lunsford Middle School | Virginia | 6-8 | Suburban |
| Madison Country Day School | Wisconsin | PreK-12 | Rural |
| Marietta Sixth Grade Academy | Georgia | 6 | Suburban |
| McCulloch Intermediate School | Texas | 5-6 | Suburban |
| Miguel Juarez Middle School | Illinois | 6-8 | Urban |
| Phoenix Middle School | Ohio | 7-8 | Suburban |
| Readington Middle School | New Jersey | 6-8 | Suburban |
| Ridgedale Middle School | New Jersey | 6-8 | Suburban |
| Schoenbar Middle School | Alaska | 7-8 | Rural |
| Seaman Middle School | Kansas | 7-8 | Rural |
| Seneca Ridge Middle School | Virginia | 6-8 | Suburban |
| Tomahawk Creek Middle School | Virginia | 6-8 | Suburban |
| Tybee Island Maritime Academy | Georgia | K-8 | Suburban |
| Wisdom Lane Middle School | New York | 6-8 | Suburban |