Schools
| Name | Years | Students |
|---|---|---|
| Jackson Memorial | 26 | 54 |
| Jackson Liberty HS | 1 | 1 |
| J.P. Stevens | 49 | 415 |
| J.F.K. Memorial | 10 | 22 |
| J.F. Kennedy-Willingboro | 5 | 6 |
| Irvington | 4 | 8 |
| Iona | 1 | 1 |
| Indian Hills | 20 | 60 |
| Immaculata | 31 | 68 |
| Hunterdon Central | 49 | 192 |
| Hudson School, The | 1 | 1 |
| Howell | 49 | 266 |
| Hopewell Valley Regional | 48 | 252 |
| Hopatcong | 8 | 14 |
| Home School 1 | 3 | 6 |
| Holy Family Academy | 1 | 1 |
| Holy Cross | 1 | 1 |
| Holmdel | 35 | 104 |
| Hohokus | 1 | 1 |
| Hoboken, Demarest | 1 | 1 |