Schools
| Name | Years | Students |
|---|---|---|
| Short Hills | 1 | 4 |
| Sicklerville | 1 | 1 |
| Snyder, Jersey City | 3 | 5 |
| Somerdale | 2 | 2 |
| Somers Point | 2 | 2 |
| Somerville | 50 | 177 |
| South Brunswick | 25 | 67 |
| South Hunterdon | 14 | 19 |
| South Orange | 1 | 4 |
| South Plainfield | 31 | 110 |
| South River | 13 | 34 |
| South Side, Newark | 9 | 21 |
| Southern Regional, Manahawkin | 2 | 2 |
| Sparta | 36 | 99 |
| Spotswood | 7 | 12 |
| Spring Lake | 1 | 1 |
| Springfield | 5 | 11 |
| St. Augustine Prep | 7 | 13 |
| St. Benedict's, Newark | 11 | 37 |
| St. Mary's | 3 | 4 |