| Mississinawa Valley Local School District, OH (District) |
| Mississinewa Community School Corp, IN (District) |
| Mississippi Bend Aea, IA (District) |
| Mississippi County, MO (ISD) |
| Mississippi County, AR (ISD) |
| Mississippi Department of Education, MS (State) |
| Mississippi State Hospital, MS (District) |
| Missoula, MT (District) |
| Missoula Area Education Coop, MT (District) |
| Missoula County, MT (ISD) |
| Missoula Elem, MT (District) |
| Missoula H S, MT (District) |
| Missouri City 56, MO (District) |
| Missouri Department of Education, MO (State) |
| Missouri River Area Career & Technical Center, ND (District) |
