| Abbreviation | Definition |
|---|---|
| MSHS | Marsden State High School |
| MSHS | Melville Senior High School |
| MSHS | Miami Senior High School |
| MSHS | Millard South High School |
| MSHS | Mirrabooka Senior High School |
| MSHS | Morley Senior High School |
| MSHS | Mount Shasta High School |
| MSHS | Mount Si High School |
| MSHS | Mt Shasta High School |
| MSHS | Mt Spokane High School |
| MSHS | Muscle Shoals High School |
| MSIH | Medical School For International Health |
| MSIP | Michigan School Insurance Programs |
| MSIP | Missouri School Improvement Plan |
| MSIP | Missouri School Improvement Program |
| MSIP | MO School Improvement Program |
| MSIS | Milwaukee Spanish Immersion School |
| MSIS | Mississippi Student Information System |
| MSJ | Mount Saint Joseph High School |
| MSK | Middle School of the Kennebunks |