| Index | Flanders | 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 | Flanders | New York | National |
| Completed 8th grade | 66.0% | 83.5% | 84.3% |
| Completed high school | 63.1% | 82.1% | 83.0% |
| Completed some college | 34.1% | 59.5% | 59.4% |
| Completed associate degree | 21.9% | 43.4% | 38.5% |
| Completed bachelors | 15.4% | 34.7% | 30.3% |
| Completed masters | 7.2% | 15.1% | 11.5% |
| Completed professional degree | 0.0% | 4.2% | 3.3% |
| Completed doctorate | 0.0% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Flanders. Using the proficiency score averages, the average test scores for Flanders, NY schools is n/a. The average student to teacher ratio is n/a. In Flanders, NY, an average of 66.0% of students have completed 8th grade and an average of 63.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Quogue, NY | 623 | 80% | 66.7% |
| Mattituck, NY | 5,017 | 77% | 60.4% |
| Westhampton Beach, NY | 1,911 | 73% | 51.7% |
| Center Moriches, NY | 8,136 | 66% | 36.5% |
| East Moriches, NY | 5,096 | 63% | 31.8% |
| Flanders, NY | 5,277 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Perry, UT | 5,277 | 44% | 9.4% |
| La Crescent, MN | 5,277 | 51% | 6.0% |
| Savannah, MO | 5,277 | 46% | 5.2% |
| Hugo, OK | 5,274 | 17% | 65.4% |
| Beckett, NJ | 5,281 | 70% | 45.3% |
| Flanders, NY | 5,277 | n/a |