Schools
| Name | Years | Students |
|---|---|---|
| Shore Regional | 6 | 8 |
| Shawnee | 32 | 72 |
| Seton Hall Prep | 1 | 1 |
| Seneca | 2 | 3 |
| Secaucus HS | 0 | 0 |
| Seabrook | 2 | 3 |
| Scott, East Orange | 1 | 1 |
| Scotch Plains-Fanwood | 61 | 345 |
| Scotch Plains | 2 | 2 |
| Science | 2 | 2 |
| Schalick | 4 | 5 |
| Sayerville Memorial | 2 | 3 |
| Sayerville Jr. | 1 | 1 |
| Sayerville | 11 | 27 |
| Salem | 1 | 1 |
| Salem | 17 | 27 |
| Saddle Brook | 6 | 23 |
| Sacred Heart | 4 | 7 |
| Rutherford | 21 | 33 |
| Rutgers University | 1 | 1 |