Schools
All schools
Only schools that competed in 2026-27
| School Name | State | Teams |
|---|---|---|
| Marion Senior | VA | 1 |
| Marquette | MI | 2 |
| Marquette Senior High School | MI | 1 |
| Marshall High School | MO | 2 |
| Marshall Middle | CA | 1 |
| Marshfield | MO | 1 |
| Martin Magnet | NC | 3 |
| Martinsville | OH | 2 |
| Maryville | TN | 1 |
| Mascoma Valley | NH | 1 |
| Mascoma Valley Regional High School | NH | 1 |
| Mascoutah | IL | 2 |
| Mason | OH | 1 |
| Mason Classical Academy | FL | 4 |
| Mason County | KY | 1 |
| Mather | NJ | 2 |
| Matson | TN | 1 |
| Mauldin High School | SC | 1 |
| Maumee Valley Country Day School | OH | 2 |
| Mayo | SC | 1 |