| Marion School District, SD (District) |
| Marion School District, WI (District) |
| Marion-Florence, KS (District) |
| Marion/Clinton/Wash Co CTES, IL (District) |
| Marionville R-Ix, MO (District) |
| Mariposa County Office of Education, CA (District) |
| Mariposa County Unified, CA (District) |
| Mariposa ESA, CA (ISD) |
| Marissa CUSD 40, IL (District) |
| Maritime Academy Charter School, PA (PSA) |
| Maritime Academy of Toledo The, OH (PSA) |
| Mark Armijo Academy, NM (PSA) |
| Mark Twain R-Viii, MO (District) |
| Mark Twain Union Elementary, CA (District) |
| Mark West Union Elementary, CA (District) |
