| Mountain Brook High School | - | Varsity | - | 0 | |
| Mountain Island Charter School | - | Varsity | Small | 0 | |
| Mountain Pointe High School | - | - | - | 0 | |
| Mountain Range High School | - | Varsity | - | 0 | |
| Mountain Range High School | - | Varsity | - | 0 | |
| Mountain Range High School | - | Varsity | Small | 0 | |
| Mountain Ridge High School | - | Varsity | Medium | 0 | |
| Mountain Ridge High School | - | Varsity | - | 0 | |
| Mountain Valley Middle School | - | - | Medium | 0 | |
| Mountain Valley Middle School | - | - | Small | 0 | |
| Mountain View High School | - | - | - | 0 | |
| Mountain View High School | - | - | - | 0 | |
| Mountain View High School | - | - | - | 0 | |
| Mountain View High School | - | - | - | 0 | |
| Mountain View High School | - | - | - | 0 | |
| Mountain View High School | - | Varsity | Small | 0 | |
| Mountain View High School | - | Junior | Large | 0 | |
| Mountain View High School | - | Varsity | - | 0 | |
| Mountain View High School | - | Varsity | Small | 0 | |
| Muhlenberg High School | - | Junior | - | 0 | |
| Muhlenberg High School | - | Varsity | Medium | 0 | |
| Mullen High School | - | Varsity | - | 0 | |
| Mullen High School | - | Varsity | - | 0 | |
| Munster High School | - | Varsity | Medium | 0 | |
| Munster High School | - | Varsity | Medium | 0 | |
| Munster High School | - | Varsity | Medium | 0 | |
| Murphy High School | - | Varsity | Medium | 0 | |
| Murphy High School | - | Junior | Small | 0 | |
| Murrieta Mesa High School | - | Junior | - | 0 | |
| Murrieta Mesa High School | - | Varsity | Large | 0 | |
| Murrieta Valley High School | - | Varsity | - | 0 | |
| Murrieta Valley High School | - | - | - | 0 | |
| Muscle Shoals High School | - | Varsity | Medium | 0 | |
| Muskingum University | - | - | - | 0 | |
| Mustang High School | - | Varsity | Large | 0 | |
| Mustang High School | - | Varsity | Large | 0 | |
| Myers Park High School | - | Junior | Small | 0 | |
| Myers Park High School | - | Varsity | Large | 0 | |
| Myrtle Beach High School | - | Varsity | Medium | 0 | |
| Myrtle Beach High School | - | Varsity | Small | 0 | |
| Napoleon High School | - | Varsity | - | 0 | |
| Nash Central High School | - | Varsity | Small | 0 | |
| Nature Coast Tech High School | - | Varsity | Large | 0 | |
| Nature Coast Tech High School | - | Varsity | Small | 0 | |
| Nature Coast Tech High School | - | Varsity | Small | 0 | |
| Navarro College | - | - | - | 0 | |
| Navarro High School | - | Varsity | Medium | 0 | |
| Nazareth Academy High School | - | Varsity | Small | 0 | |
| Nazareth Area High School | - | Varsity | - | 0 | |
| Nazareth Area High School | - | Varsity | Large | 0 | |
