| Abbreviation | Definition |
|---|---|
| MCHS | Middle Creek High School |
| MCHS | Midwest City High School |
| MCHS | Mifflin County High School |
| MCHS | Mill Creek High School |
| MCHS | Millington Central High School |
| MCHS | Mira Costa High School |
| MCHS | Mission Collegiate High School |
| MCHS | Monroe Central High School |
| MCHS | Montezuma Cortez High School |
| MCHS | Morgan City High School |
| MCHS | Morgan County High School |
| MCHS | Mount Carmel High School |
| MCHS | Mt Carmel High School |
| MCMS | Madison Co Middle School |
| MCMS | Madison County Middle School |
| MCMS | Maranacook Community Middle School |
| MCMS | Mason County Middle School |
| MCMS | McIntosh County Middle School |
| MCMS | Medea Creek Middle School |
| MCMS | Meridian Creek Middle School |