| Index | Northwest Harbor | 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 | Northwest Harbor | New York | National |
| Completed 8th grade | 93.7% | 83.5% | 84.3% |
| Completed high school | 93.7% | 82.1% | 83.0% |
| Completed some college | 68.4% | 59.5% | 59.4% |
| Completed associate degree | 54.9% | 43.4% | 38.5% |
| Completed bachelors | 50.5% | 34.7% | 30.3% |
| Completed masters | 28.1% | 15.1% | 11.5% |
| Completed professional degree | 7.4% | 4.2% | 3.3% |
| Completed doctorate | 4.0% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Northwest Harbor. Using the proficiency score averages, the average test scores for Northwest Harbor, NY schools is n/a. The average student to teacher ratio is n/a. In Northwest Harbor, NY, an average of 93.7% of students have completed 8th grade and an average of 93.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Amagansett, NY | 510 | 80% | 66.7% |
| Sag Harbor, NY | 1,959 | 65% | 34.4% |
| East Hampton, NY | 920 | 63% | 31.0% |
| Cutchogue, NY | 2,948 | 59% | 21.9% |
| Montauk, NY | 3,563 | 55% | 13.5% |
| Northwest Harbor, NY | 4,138 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Grafton, ND | 4,139 | 37% | 23.6% |
| Haleyville, AL | 4,139 | 42% | 13.2% |
| North Wilkesboro, NC | 4,139 | 40% | 16.9% |
| Falls City, NE | 4,139 | 53% | 10.1% |
| Farmington, NH | 4,140 | 40% | 17.7% |
| Northwest Harbor, NY | 4,138 | n/a |
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