| Index | Williamson | New York | National |
| Average Test Scores | 62% | 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 | Williamson | New York | National |
| Completed 8th grade | 85.6% | 83.5% | 84.3% |
| Completed high school | 85.1% | 82.1% | 83.0% |
| Completed some college | 47.9% | 59.5% | 59.4% |
| Completed associate degree | 29.3% | 43.4% | 38.5% |
| Completed bachelors | 14.8% | 34.7% | 30.3% |
| Completed masters | 6.2% | 15.1% | 11.5% |
| Completed professional degree | 1.1% | 4.2% | 3.3% |
| Completed doctorate | 0.7% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Williamson. Using the proficiency score averages, the average test scores for Williamson, NY schools is 62%. The average student to teacher ratio is n/a. In Williamson, NY, an average of 85.6% of students have completed 8th grade and an average of 85.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Fairport, NY | 5,336 | 65% | 35.8% |
| Palmyra, NY | 3,361 | 64% | 33.3% |
| Webster, NY | 5,666 | 62% | 28.5% |
| Ontario, NY | 2,038 | 59% | 22.9% |
| Marion, NY | 1,251 | 57% | 18.8% |
| Williamson, NY | 2,642 | 62% | 28.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Eutaw, AL | 2,643 | 24% | 51.0% |
| Claxton, GA | 2,641 | 28% | 41.9% |
| Phoenix, NY | 2,643 | 60% | 24.0% |
| Rio Hondo, TX | 2,644 | 39% | 19.8% |
| Bonners Ferry, ID | 2,639 | 48% | 0.3% |
| Williamson, NY | 2,642 | 62% | 28.5% |
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