| Marcus High School | - | Junior Varsity | - | 0 | |
| Marcus High School | - | Junior Varsity | - | 0 | |
| Marcus High School | - | Junior Varsity | - | 0 | |
| Marcus High School | - | Varsity | - | 0 | |
| Marcus High School | - | Varsity | - | 0 | |
| Margays | - | - | - | 0 | |
| Maria Carrillo High School | - | Varsity | Small | 0 | |
| Maria Carrillo High School | - | Varsity | Small | 0 | |
| Maria Carrillo High School | - | Varsity | Medium | 0 | |
| Maria Carrillo High School | - | Varsity | Medium | 0 | |
| Maria Regina High School | - | Varsity | Large | 0 | |
| Maria Regina High School | - | Varsity | Large | 0 | |
| Maria Regina High School | - | Varsity | Small | 0 | |
| Maria Regina High School | - | Varsity | Medium | 0 | |
| Maria Regina High School | - | Varsity | Medium | 0 | |
| Maria Regina High School | - | Varsity | Small | 0 | |
| Maria Regina High School | - | Varsity | - | 0 | |
| Marian High School | - | Varsity | Small | 0 | |
| Marian High School | - | Varsity | Small | 0 | |
| Marian High School | - | Varsity | - | 0 | |
| Marian University | - | - | - | 0 | |
| Marietta High School | - | Varsity | - | 0 | |
| Marietta High School | - | Varsity | - | 0 | |
| Marietta High School | - | Varsity | Small | 0 | |
| Marietta High School | - | Varsity | - | 0 | |
| Marietta High School | - | Varsity | Small | 0 | |
| Marin - Allegro Eminence Dance Team | - | Junior | - | 0 | |
| Marin Catholic High School | - | Varsity | Medium | 0 | |
| Marin Catholic High School | - | Varsity | Medium | 0 | |
| Marina | - | - | - | 0 | |
| Marina High School | - | - | - | 0 | |
| Marina High School | - | Junior | - | 0 | |
| Marina High School | - | Junior | - | 0 | |
| Marina High School | - | - | - | 0 | |
| Marina High School | - | - | - | 0 | |
| Marina High School | - | Varsity | Medium | 0 | |
| Marina High School | - | Junior Varsity | Small | 0 | |
| Marina High School | - | Varsity | Medium | 0 | |
| Marina High School | - | Junior | Small | 0 | |
| Marina High School | - | Varsity | Small | 0 | |
| Marina High School | - | Varsity | Small | 0 | |
| Marina High School | - | Varsity | Small | 0 | |
| Marina High School | - | Varsity | Medium | 0 | |
| Marion County High School | - | Varsity | Small | 0 | |
| Marion County High School | - | Varsity | Small | 0 | |
| Marion County High School | - | Varsity | - | 0 | |
| Marion County High School | - | Varsity | Small | 0 | |
| Marion County High School | - | Varsity | Small | 0 | |
| Marion Harding High School | - | Varsity | - | 0 | |
| Marion High School | - | - | - | 0 | |
| Marion High School | - | Varsity | Medium | 0 | |
| Marist College | - | - | - | 0 | |
| Marist University | - | - | - | 0 | |
| Markayla - Raytown South High School | - | Senior | - | 0 | |
| Marlboro High School | - | Varsity | Small | 0 | |
| Marlboro High School | - | Varsity | Medium | 0 | |
| Marlboro High School | - | Varsity | Small | 0 | |
| Marlboro High School | - | Varsity | Medium | 0 | |
| Marlboro High School | - | Varsity | Medium | 0 | |
| Marlboro High School | - | Varsity | Small | 0 | |
| Marple-Newtown High School | - | Varsity | Large | 0 | |
| Marple-Newtown High School | - | Varsity | Small | 0 | |
| Marple-Newtown High School | - | Varsity | Small | 0 | |
| Marple-Newtown High School | - | Varsity | Small | 0 | |
| Marple-Newtown High School | - | Varsity | Large | 0 | |
| Marquette High School | - | Junior | - | 0 | |
| Marquette High School | - | Junior | - | 0 | |
| Marquette High School | - | Junior | - | 0 | |
| Marquette High School | - | Varsity | Small | 0 | |
| Marquette High School | - | Varsity | - | 0 | |
| Marquette High School | - | Varsity | Small | 0 | |
| Marquette High School | - | Varsity | Small | 0 | |
| Mars Area High School | - | Varsity | Medium | 0 | |
| Mars Area High School | - | Varsity | Small | 0 | |
| Mars Hill Bible High School | - | Junior | Small | 0 | |
| Mars Hill Bible High School | - | Varsity | - | 0 | |
| Mars Hill University | - | - | - | 0 | |
| Marsh Creek Eagles | L3 | - | - | 0 | |
| Marsh Creek Eagles | L3 | - | - | 0 | |
| Marsh Creek Eagles | L3 | - | - | 0 | |
| Marsh JH School | - | Junior | - | 0 | |
| Marshall County High School | - | Varsity | Medium | 0 | |
| Marshall Fund High School | - | Varsity | - | 0 | |
| Marshall Mavericks | L2.1 | - | - | 0 | |
| Marshall Mavericks | L1 | - | - | 0 | |
| Marshall Mavericks | L1 | - | - | 0 | |
| Marshall Mavericks | L1 | - | - | 0 | |
| Marshall Mavericks | L3.1 | - | - | 0 | |
| Marshall Mavericks | L1 | - | - | 0 | |
| Marshall Mavericks | L1 | - | - | 0 | |
| Marshall Mavericks | L1 | - | - | 0 | |
| Marshall Star Steppers | - | Varsity | - | 0 | |
| Marshall Star Steppers | - | Varsity | - | 0 | |
| Marshall Star Steppers | - | Varsity | - | 0 | |
| Marshall University | - | - | Small | 0 | |
| Marshall University | - | - | - | 0 | |
| Marshall University | - | - | - | 0 | |
| Marshals Cheer | L5 | IASF U18 | Small | 0 | |
| Marshals Cheer | L6 | International Open | - | 0 | |
| Martha Layne Collins High School | - | Varsity | Small | 0 | |