| Abbreviation | Definition |
|---|---|
| MCMS | Mill Creek Middle School |
| MCMS | Miller Creek Middle School |
| MCMS | Missouri City Middle School |
| MCMS | Monroe County Middle School |
| MCMS | Montgomery Central Middle School |
| MCMS | Montgomery County Middle School |
| MCMS | Morehead City Middle School |
| MCMS | Morgan County Middle School |
| MCMS | Mossy Creek Middle School |
| MCMS | Mt Carmel Middle School |
| MCNS | Mamaroneck Community Nursery School |
| MCNS | Medical Center Nursery School |
| MCNS | Mendon Community Nursery School |
| MCPP | Mill Creek Parish Preschool |
| MCPS | Manassas City Public Schools |
| MCPS | McCracken County Public Schools |
| MCPS | Middlesex County Public Schools |
| MCPS | Missoula County Public Schools |
| MCPS | Montgomery County Public Schools |
| MCPS | Morehead City Primary School |