| Monarch High School | - | Varsity | Small | 0 | | |
| Monarch High School | - | Varsity | - | 0 | | |
| Monarch High School | - | Varsity | Small | 0 | | |
| Moniteau High School | - | Varsity | Small | 0 | | |
| Monroe-Woodbury High School | - | Varsity | - | 0 | | |
| Monroe-Woodbury High School | - | Varsity | - | 0 | | |
| Monrovia High School | - | Varsity | - | 0 | | |
| Monrovia High School | - | Varsity | - | 0 | | |
| Monsignor Edward Pace High School | - | Varsity | Large | 0 | | |
| Monsignor Edward Pace High School | - | Varsity | Large | 0 | | |
| Monsignor Edward Pace High School | - | Varsity | Large | 0 | | |
| Monsignor McClancy School | - | Varsity | Small | 0 | | |
| Monta Vista High School | - | Varsity | Medium | 0 | | |
| Monte Vista Christian School | - | Varsity | Small | 0 | | |
| Monte Vista Christian School | - | Varsity | - | 0 | | |
| Monterey High School | - | Varsity | Small | 0 | | |
| Monterey High School | - | Varsity | Small | 0 | | |
| Montgomery Central High School | - | Varsity | Small | 0 | | |
| Montgomery Central High School | - | Varsity | - | 0 | | |
| Montgomery County High School | - | Varsity | Large | 0 | | |
| Montgomery High School (NJ) | - | Varsity | Large | 0 | | |
| Montgomery High School (NJ) | - | Varsity | Small | 0 | | |
| Montgomery High School (NJ) | - | Varsity | Small | 0 | | |
| Montgomery High School (NJ) | - | Varsity | - | 0 | | |
| Montgomery High School (NJ) | - | Varsity | Small | 0 | | |
| Montour High School | - | Varsity | Small | 0 | | |
| Montoursville Area High School | - | Varsity | - | 0 | | |
| Montoursville Area High School | - | Varsity | Large | 0 | | |
| Montoursville Area High School | - | Varsity | Medium | 0 | | |
| Montoursville Area High School | - | - | - | 0 | | |
| Montrose High School | - | Varsity | Medium | 0 | | |
| Montville High School | - | Varsity | - | 0 | | |
| Montwood High School | - | Varsity | - | 0 | | |
| Moody High School | - | Varsity | - | 0 | | |
| Moon Valley High School | - | Varsity | Large | 0 | | |
| Mooresville High School | - | Varsity | Large | 0 | | |
| Mooresville High School | - | Varsity | - | 0 | | |
| Mooresville High School | - | Varsity | - | 0 | | |
| Moreau Catholic High School | - | Varsity | Small | 0 | | |
| Moreau Catholic High School | - | Varsity | Medium | 0 | | |
| Moreau Catholic High School | - | Varsity | Small | 0 | | |
| Moreau Catholic High School | - | Varsity | Small | 0 | | |
| Moreau Catholic High School | - | Varsity | Small | 0 | | |
| Morgan High School | - | Varsity | Medium | 0 | | |
| Morgan High School | - | Varsity | Large | 0 | | |
| Morgan High School | - | Varsity | Medium | 0 | | |
| Morgan High School | - | - | - | 0 | | |
| Morgan High School | - | Varsity | Small | 0 | | |
| Morgan High School | - | Varsity | - | 0 | | |
| Morton Ranch High School | - | Varsity | Medium | 0 | | |