| Mt. Healthy Preparatory and Fitness Academy, OH (PSA) |
| Mt. Morris Consolidated Schools, MI (District) |
| Mt. Pleasant City School District, MI (District) |
| Mt. Shasta Union Elementary, CA (District) |
| Mt. Vernon R-V, MO (District) |
| Mt. Vernon/Enola School Dist., AR (District) |
| Muckleshoot Indian Tribe, WA (District) |
| Muenster ISD, TX (District) |
| Muhlenberg County, KY (Phantom) |
| Muhlenberg County Schools, KY (District) |
| Muhlenberg SD, PA (District) |
| Mukilteo School District, WA (District) |
| Mukwonago School District, WI (District) |
| Mulberry Elementary, CA (District) |
| Mulberry Grove CUSD 1, IL (District) |
