| Riverhead Senior High School | 7.6 |
1525 | 55.5% | 21.8% | 20.1% | 0.7% | 1.2% |
| Center Moriches High School | 8.2 |
566 | 77.7% | 8.8% | 6.0% | 5.8% | 1.6% |
| Hampton Bays Secondary School | 8.3 |
636 | 62.3% | 35.5% | 1.1% | 0.2% | 0.3% |
| Eastport South Manor Junior Senior High School | 9.2 |
1833 | 92.5% | 3.9% | 2.1% | 0.1% | 1.4% |
| William Floyd High School | 10.9 |
2928 | 63.7% | 18.3% | 13.8% | 1.0% | 2.5% |
| Mattituck Junior Senior High School | 13.8 |
805 | 89.6% | 5.1% | 3.1% | - | 1.6% |
| Shoreham Wading River High School | 14.2 |
834 | 91.1% | 4.2% | 2.5% | - | 2.2% |
| Bellport Senior High School | 14.7 |
1346 | 47.0% | 22.8% | 27.4% | 0.3% | 1.9% |
| Longwood High School | 14.8 |
2845 | 57.9% | 17.9% | 19.2% | 0.2% | 3.3% |
| Southampton High School | 15.2 |
578 | 61.4% | 21.8% | 5.9% | 8.0% | 2.4% |
| Rocky Point High School | 17.4 |
1047 | 93.1% | 4.5% | 0.4% | - | 1.3% |
| Patchogue Medford High School | 17.8 |
2646 | 69.8% | 22.2% | 5.4% | 0.3% | 1.9% |
| Sachem High School East | 19.1 |
2347 | 85.3% | 7.0% | 2.1% | 0.2% | 5.4% |
| Miller Place High School | 19.5 |
973 | 88.7% | 5.3% | 1.8% | 0.2% | 2.7% |
| Southold Junior Senior High School | 20.2 |
442 | 89.1% | 7.7% | 0.9% | - | 1.1% |
| Comsewogue High School | 21.1 |
1309 | 76.2% | 17.9% | 2.4% | - | 3.2% |
| Mount Sinai High School | 21.4 |
814 | 90.5% | 2.7% | 2.0% | 0.1% | 4.7% |
| Newfield High School | 21.8 |
1694 | 75.1% | 13.6% | 5.3% | 0.1% | 5.5% |
| Bayport Blue Point High School | 21.9 |
769 | 93.0% | 3.5% | 1.0% | 0.1% | 2.1% |
| Centereach High School | 23.2 |
1641 | 78.5% | 10.7% | 4.2% | - | 6.2% |
| Ward Melville Senior High School | 23.3 |
1848 | 85.0% | 5.0% | 1.7% | 0.1% | 7.6% |
| Earl L Vandermeulen High School | 23.6 |
401 | 86.8% | 6.2% | 1.0% | - | 3.5% |
| Sachem High School North | 23.7 |
2326 | 85.1% | 8.4% | 1.7% | 0.0% | 4.6% |
| Sayville High School | 24.0 |
1080 | 94.4% | 3.6% | 0.6% | 0.1% | 1.1% |
| Greenport High School | 24.4 |
327 | 59.3% | 25.1% | 15.6% | - | - |
