| Index | Washington Mills | 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 | Washington Mills | New York | National |
| Completed 8th grade | 85.6% | 83.5% | 84.3% |
| Completed high school | 85.4% | 82.1% | 83.0% |
| Completed some college | 76.3% | 59.5% | 59.4% |
| Completed associate degree | 60.2% | 43.4% | 38.5% |
| Completed bachelors | 28.0% | 34.7% | 30.3% |
| Completed masters | 8.8% | 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 Washington Mills. Using the proficiency score averages, the average test scores for Washington Mills, NY schools is n/a. The average student to teacher ratio is n/a. In Washington Mills, NY, an average of 85.6% of students have completed 8th grade and an average of 85.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Ilion, NY | 7,766 | 73% | 51.0% |
| Clinton, NY | 1,961 | 71% | 48.3% |
| New Hartford, NY | 1,811 | 71% | 46.9% |
| Hamilton, NY | 3,649 | 66% | 37.0% |
| Holland Patent, NY | 317 | 65% | 35.1% |
| Washington Mills, NY | 2,213 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Nokomis, IL | 2,213 | 43% | 9.9% |
| Great Barrington, MA | 2,213 | 53% | 11.1% |
| Cranbury, NJ | 2,213 | 81% | 68.8% |
| Buena Vista, GA | 2,214 | 32% | 33.3% |
| Oakboro, NC | 2,214 | 47% | 2.1% |
| Washington Mills, NY | 2,213 | n/a |
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