Schools
| Name | Years | Students |
|---|---|---|
| Montclair | 28 | 79 |
| Montgomery | 15 | 50 |
| Montville | 16 | 26 |
| Moorestown | 46 | 187 |
| Morrestown | 3 | 6 |
| Morrestown Friends | 2 | 2 |
| Morris Catholic | 2 | 2 |
| Morris Co. School of Technology | 1 | 1 |
| Morris Hills | 50 | 154 |
| Morris Knolls | 53 | 229 |
| Morris Township Jr. | 1 | 1 |
| Morristown | 38 | 91 |
| Morristown-Beard School | 2 | 3 |
| Mount Ephraim | 1 | 1 |
| Mountain High, West Orange | 6 | 8 |
| Mountain Lakes | 22 | 42 |
| Mountain View | 1 | 2 |
| Mountainside | 1 | 1 |
| Mt. High, West Orange | 1 | 1 |
| Mt. Olive | 30 | 78 |