| Middlesex High School | - | Varsity | Small | 0 | | |
| Middlesex High School | - | Varsity | Small | 0 | | |
| Middlesex High School | - | Varsity | Small | 0 | | |
| Middletown High School | - | Varsity | - | 0 | | |
| Midlothian High School | - | Varsity | - | 0 | | |
| Midview High School | - | Varsity | - | 0 | | |
| Midview High School | - | Varsity | - | 0 | | |
| Milford High School | - | Varsity | Large | 0 | | |
| Milford High School | - | Varsity | Large | 0 | | |
| Milford High School | - | Varsity | - | 0 | | |
| Milford High School | - | Varsity | Large | 0 | | |
| Milford High School | - | Varsity | - | 0 | | |
| Mill Valley High School | - | Varsity | Large | 0 | | |
| Mill Valley High School | - | Varsity | Medium | 0 | | |
| Mill Valley High School | - | Varsity | Small | 0 | | |
| Mill Valley High School | - | Varsity | - | 0 | | |
| Mill Valley High School | - | Varsity | Small | 0 | | |
| Mill Valley High School | - | Varsity | - | 0 | | |
| Millard North High School | - | Varsity | Small | 0 | | |
| Millard North High School | - | Varsity | Medium | 0 | | |
| Millard North High School | - | Varsity | - | 0 | | |
| Millard North High School | - | Varsity | Small | 0 | | |
| Millard West High School | - | Varsity | - | 0 | | |
| Millard West High School | - | Varsity | - | 0 | | |
| Millard West High School | - | Varsity | - | 0 | | |
| Millard West High School | - | Varsity | - | 0 | | |
| Millbrook High School | - | Varsity | Small | 0 | | |
| Millennium High School | - | Junior | - | 0 | | |
| Millington High School | - | Varsity | Small | 0 | | |
| Milpitas High School | - | Varsity | Large | 0 | | |
| Minden High School | - | Varsity | Small | 0 | | |
| Minden High School | - | Varsity | Medium | 0 | | |
| Minerva High School | - | Varsity | Small | 0 | | |
| Minerva High School | - | Varsity | - | 0 | | |
| Minisink Valley High School | - | Varsity | Small | 0 | | |
| Minisink Valley High School | - | Varsity | Small | 0 | | |
| Minor High School | - | Varsity | Small | 0 | | |
| Minor High School | - | Varsity | Small | 0 | | |
| Mira Costa High School | - | Varsity | Large | 0 | | |
| Mira Costa High School | - | - | - | 0 | | |
| Mira Costa High School | - | Varsity | - | 0 | | |
| Miramar High School | - | Varsity | - | 0 | | |
| Miramonte | - | Varsity | - | 0 | | |
| Mission Oak High School | - | Varsity | Small | 0 | | |
| Mission Oak High School | - | - | Medium | 0 | | |
| Mission Oak High School | - | Varsity | - | 0 | | |
| Mission Valley High School | - | Varsity | Small | 0 | | |
| Mitchell High School | - | Varsity | Small | 0 | | |
| Mize Attendance Center | - | Varsity | - | 0 | | |
| Mobile Christian High School | - | Varsity | - | 0 | | |
| 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 | | |