| Index | New Suffolk | New York | National |
| Average Test Scores | 50% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | n/a | 4,060 | 79,221 |
| Total private schools | n/a | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | New Suffolk | New York | National |
| Completed 8th grade | 93.3% | 83.5% | 84.3% |
| Completed high school | 93.3% | 82.1% | 83.0% |
| Completed some college | 79.0% | 59.5% | 59.4% |
| Completed associate degree | 54.9% | 43.4% | 38.5% |
| Completed bachelors | 48.7% | 34.7% | 30.3% |
| Completed masters | 20.5% | 15.1% | 11.5% |
| Completed professional degree | 8.9% | 4.2% | 3.3% |
| Completed doctorate | 2.2% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in New Suffolk. Using the proficiency score averages, the average test scores for New Suffolk, NY schools is 50%. The average student to teacher ratio is n/a. In New Suffolk, NY, an average of 93.3% of students have completed 8th grade and an average of 93.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Quogue, NY | 600 | 80% | 66.7% |
| Mattituck, NY | 4,898 | 77% | 60.4% |
| Westhampton Beach, NY | 1,869 | 73% | 51.7% |
| Sag Harbor, NY | 1,959 | 65% | 34.4% |
| East Moriches, NY | 4,902 | 63% | 31.8% |
| New Suffolk, NY | 353 | 50% | 4.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Belmont, OH | 353 | 57% | 17.7% |
| Blanket, TX | 353 | 30% | 38.5% |
| Macks Creek, MO | 353 | 40% | 17.7% |
| Jennings, OK | 353 | 30% | 38.5% |
| Phoenicia, NY | 353 | 50% | 4.2% |
| New Suffolk, NY | 353 | 50% | 4.2% |
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