| Marblehead Community Charter Public (District), MA (District) |
| Marceline R-V, MO (District) |
| Marcellus Central School District, NY (District) |
| Marcellus Community Schools, MI (District) |
| Marcola Sd 79J, OR (District) |
| Marcum-Illinois Union Elementary, CA (District) |
| Marcus-Meriden-Cleghorn Comm School District, IA (District) |
| Marengo CHSD 154, IL (District) |
| Marengo County, AL (District) |
| Marengo County, AL (ISD) |
| Marengo-Union E Cons D 165, IL (District) |
| Marenisco School District, MI (District) |
| Marfa ISD, TX (District) |
| Margaretta Local School District, OH (District) |
| Margaretville Central School District, NY (District) |
