| Index | Peconic | New York | National |
| Average Test Scores | n/a | 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 | Peconic | New York | National |
| Completed 8th grade | 82.2% | 83.5% | 84.3% |
| Completed high school | 82.2% | 82.1% | 83.0% |
| Completed some college | 53.6% | 59.5% | 59.4% |
| Completed associate degree | 37.2% | 43.4% | 38.5% |
| Completed bachelors | 29.9% | 34.7% | 30.3% |
| Completed masters | 20.3% | 15.1% | 11.5% |
| Completed professional degree | 1.3% | 4.2% | 3.3% |
| Completed doctorate | 1.3% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Peconic. Using the proficiency score averages, the average test scores for Peconic, NY schools is n/a. The average student to teacher ratio is n/a. In Peconic, NY, an average of 82.2% of students have completed 8th grade and an average of 82.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Mattituck, NY | 4,898 | 77% | 60.4% |
| Sag Harbor, NY | 1,959 | 65% | 34.4% |
| East Hampton, NY | 920 | 63% | 31.0% |
| Cutchogue, NY | 2,948 | 59% | 21.9% |
| Hampton Bays, NY | 14,684 | 57% | 19.1% |
| Peconic, NY | 706 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Idaho City, ID | 706 | 53% | 10.9% |
| Fincastle, VA | 706 | 86% | 78.1% |
| Bakersville, NC | 706 | 39% | 18.8% |
| Burke, SD | 705 | 57% | 19.4% |
| Rawson, OH | 707 | 62% | 29.2% |
| Peconic, NY | 706 | n/a |
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