| Abbreviation | Definition |
|---|---|
| MBHS | Morant Bay High School |
| MBHS | Morro Bay High School |
| MBHS | Mount Baker High School |
| MBHS | Mount Blue High School |
| MBHS | Mountain Brook High School |
| MBHS | Mt Blue High School |
| MBHS | Murry Bergtraum High School |
| MBHS | Myrtle Beach High School |
| MBIS | Marist Brothers International School |
| MBNS | Manhattan Beach Nursery School |
| MBRSC | Mohammed Bin Rashid School for Communication |
| MBRSC | Mohammed Bin Rashid School of Communication |
| MBS | Maha Bodhi School |
| MBS | Malletts Bay School |
| MBS | Morristown Beard School |
| MBSS | Mission Beach State School |
| MBSS | Mount Baker Secondary School |
| MBSZ | Marketing and Business School Zurich |
| MCAB | Media Center Advisory Board |
| MCAS | Michigan City Area Schools |