| Abbreviation | Definition |
|---|---|
| MCAS | Murder Children at School |
| MCBA | Michigan Competing Bands Association |
| MCC | Melbourne Cricket Club |
| MCDS | Madison Country Day School |
| MCDS | Marin Country Day School |
| MCDS | Miami Country Day School |
| MCES | Macon County Elementary School |
| MCES | Madison County Elementary School |
| MCES | McGee's Crossroads Elementary School |
| MCES | Mercer County Elementary School |
| MCES | Midland City Elementary School |
| MCES | Mill Creek Elementary School |
| MCES | Montgomery Central Elementary School |
| MCES | Morgan County Elementary School |
| MCES | Morning Creek Elementary School |
| MCES | Mountain Crest Elementary School |
| MCES | Mt Carmel Elementary School |
| MCFS | Minnesota Computers for Schools |
| MCFSS | Marine Corps Food Service School |
| MCFSS | Maryland Center for School Safety |