| Mount Juliet High School | - | Junior | Small | 0 | |
| Mount Juliet High School | - | Junior | - | 0 | |
| Mount Pisgah Middle School | - | Junior | - | 0 | |
| Mount Pleasant JH School | - | Junior | - | 0 | |
| Mount Pleasant Middle School | - | Junior | - | 0 | |
| Mount Sacred Heart School | - | Junior | - | 0 | |
| Mount Sacred Heart School | - | Junior | - | 0 | |
| Mount San Antonio College | - | Junior | Small | 0 | |
| Mount San Antonio College | - | Junior | Small | 0 | |
| Mount Vernon High School | - | Junior | - | 0 | |
| Mount Vernon High School | - | Junior | - | 0 | |
| Mount Vernon High School | - | Junior | Large | 0 | |
| Mount Washington Middle School | - | Junior | - | 0 | |
| Mountain Brook JH School | - | Junior | - | 0 | |
| Mountain Brook JH School | - | Junior | - | 0 | |
| Mountain Elite | L1.1 | Junior | - | 0 | |
| Mountain Elite | L1 | Junior | - | 0 | |
| Mountain Elite | L2 | Junior | - | 0 | |
| Mountain Elite | L1.1 | Junior | - | 0 | |
| Mountain House High School | - | Junior | - | 0 | |
| Mountain Ridge High School | - | Junior | - | 0 | |
| Mountain Ridge High School | - | Junior | - | 0 | |
| Mountain Ridge High School | - | Varsity | Medium | 0 | |
| Mountain View High School | - | Junior | - | 0 | |
| Mountain View High School | - | Junior | - | 0 | |
| Mountain View High School | - | Junior | - | 0 | |
| Mountain View High School | - | Junior | Large | 0 | |
| Mountain View High School | - | Junior | Small | 0 | |
| Mountain View High School | - | Junior | Large | 0 | |
| Movez Elite | L2.2 | Junior | - | 0 | |
| Movez Elite | L2.2 | Junior | - | 0 | |
| Moxi Athletics | L1 | Junior | Small | 0 | |
| MPact Dance Studio | - | Junior | - | 0 | |
| MPact Dance Studio | - | Junior | Small | 0 | |
| Mpower Dance Studio | L1.1 | Junior | - | 0 | |
| Muhlenberg High School | - | Junior | - | 0 | |
| Murphy High School | - | Junior | Small | 0 | |
| Murphy High School | - | Junior | Small | 0 | |
| Murrieta Mesa High School | - | Junior | - | 0 | |
| Murrieta Valley High School | - | - | - | 0 | |
| Muscle Shoals Middle School | - | Junior | - | 0 | |
| Muscle Shoals Middle School | - | Junior | Small | 0 | |
| Music City All Stars | - | Junior | - | 0 | |
| Mustang All Stars | L2 | Junior | Small | 0 | |
| Mustang All Stars | L3 | Junior | - | 0 | |
| Mustang All Stars | L2 | Junior | - | 0 | |
| Mustang All Stars | L2 | Junior | - | 0 | |
| Mustang Cheer | L3.2 | Junior | - | 0 | |
| Mustang Cheer | L2.2 | Junior | - | 0 | |
| Mustang Cheer | L2 | Junior | - | 0 | |
