| Morton Ranch High School | - | Varsity | Small | 0 | | |
| Morton Ranch High School | - | Varsity | Medium | 0 | | |
| Moses Lake High School | - | - | - | 0 | | |
| Mosley High School | - | Varsity | - | 0 | | |
| Mosley High School | - | Varsity | Small | 0 | | |
| Mosley High School | - | Varsity | Small | 0 | | |
| Mosley High School | - | Varsity | Medium | 0 | | |
| Mosley High School | - | Varsity | - | 0 | | |
| Mount Airy High School | - | Varsity | - | 0 | | |
| Mount Carmel Academy | - | Varsity | Large | 0 | | |
| Mount Carmel Academy | - | Varsity | Large | 0 | | |
| Mount Carmel High School | - | Varsity | Small | 0 | | |
| Mount Carmel High School | - | Varsity | - | 0 | | |
| Mount Carmel High School | - | Varsity | Small | 0 | | |
| Mount Carmel High School | - | Varsity | Small | 0 | | |
| Mount De Sales Academy | - | Varsity | - | 0 | | |
| Mount De Sales Academy | - | Varsity | - | 0 | | |
| Mount Juliet High School | - | Varsity | Medium | 0 | | |
| Mount Juliet High School | - | Varsity | Medium | 0 | | |
| Mount Juliet High School | - | Varsity | Small | 0 | | |
| Mount Olive High School | - | Varsity | Large | 0 | | |
| Mount Olive High School | - | Varsity | Medium | 0 | | |
| Mount Pleasant High School | - | Varsity | - | 0 | | |
| Mount Pleasant High School | - | Varsity | - | 0 | | |
| Mount Pleasant High School | - | Varsity | - | 0 | | |
| Mount Saint Charles Academy | - | Varsity | - | 0 | | |
| Mount Si High School | - | Varsity | Medium | 0 | | |
| Mount Si High School | - | Varsity | - | 0 | | |
| Mount Si High School | - | Varsity | - | 0 | | |
| Mount Si High School | - | Varsity | Medium | 0 | | |
| Mount Si High School | - | Varsity | Medium | 0 | | |
| Mount Vernon High School | - | Varsity | Medium | 0 | | |
| Mount Vernon High School | - | Varsity | Medium | 0 | | |
| Mount Vernon High School | - | Varsity | Small | 0 | | |
| Mountain Brook High School | - | Varsity | - | 0 | | |
| Mountain Brook High School | - | Varsity | - | 0 | | |
| Mountain Island Charter School | - | Varsity | Small | 0 | | |
| Mountain Island Charter School | - | Varsity | - | 0 | | |
| Mountain Pointe High School | - | Varsity | Small | 0 | | |
| Mountain Pointe High School | - | Varsity | Small | 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 | Small | 0 | | |
| Mountain Ridge High School | - | Varsity | Small | 0 | | |
| Mountain Ridge High School | - | Varsity | - | 0 | | |
| Mountain Ridge High School | - | Varsity | Small | 0 | | |
| Mountain View High School | - | Varsity | Large | 0 | | |
| Mountain View High School | - | Junior | - | 0 | | |
| Mountain View High School | - | Varsity | Large | 0 | | |
| Mountain View High School | - | Varsity | Small | 0 | | |
| Mountain View High School | - | Varsity | Medium | 0 | | |
| Mountain View High School | - | - | - | 0 | | |
| Mountain View High School | - | Varsity | Small | 0 | | |
| Mountain View High School | - | Varsity | Small | 0 | | |
| Mountain View High School | - | Junior | Large | 0 | | |
| Mountain View High School | - | Varsity | Small | 0 | | |
| Mountain View High School | - | Varsity | - | 0 | | |
| Mountain View High School | - | Varsity | Small | 0 | | |
| Mountainside High School | - | Varsity | - | 0 | | |
| Mt Mansfield Union High school | - | Varsity | - | 0 | | |
| Mt Mansfield Union High school | - | Varsity | - | 0 | | |
| Muhlenberg High School | - | Varsity | Medium | 0 | | |
| Muhlenberg High School | - | Varsity | Medium | 0 | | |
| Mullen High School | - | Varsity | - | 0 | | |
| Mullen High School | - | Varsity | - | 0 | | |
| Mullen High School | - | Varsity | - | 0 | | |
| Mullen High School | - | Varsity | Medium | 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 | | |
| Murray High School | - | Varsity | - | 0 | | |
| Murray High School | - | Varsity | - | 0 | | |
| Murray High School | - | Varsity | Medium | 0 | | |
| Murrieta Mesa High School | - | Varsity | Large | 0 | | |
| Murrieta Valley High School | - | Varsity | Small | 0 | | |
| Murrieta Valley High School | - | Varsity | - | 0 | | |
| Murrieta Valley High School | - | - | - | 0 | | |
| Murrieta Valley High School | - | Varsity | Small | 0 | | |
| Muscle Shoals High School | - | Varsity | Medium | 0 | | |
| Muscle Shoals High School | - | Varsity | - | 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 | | |
| Nash Central High School | - | Varsity | Small | 0 | | |
| Nashville High School | - | Varsity | - | 0 | | |
| Natick High School | - | Varsity | - | 0 | | |
| Natick High School | - | Varsity | - | 0 | | |
| Nature Coast Tech High School | - | Varsity | Small | 0 | | |
| Nature Coast Tech High School | - | Varsity | Large | 0 | | |
| Nature Coast Tech High School | - | Varsity | Small | 0 | | |
| Navarro High School | - | Varsity | Medium | 0 | | |
| Nazareth Academy High School | - | Varsity | Medium | 0 | | |