| Index | Castleton-on-Hudson | New York | National |
| Average Test Scores | 54% | 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 | Castleton-on-Hudson | New York | National |
| Completed 8th grade | 92.0% | 83.5% | 84.3% |
| Completed high school | 91.5% | 82.1% | 83.0% |
| Completed some college | 67.6% | 59.5% | 59.4% |
| Completed associate degree | 48.6% | 43.4% | 38.5% |
| Completed bachelors | 38.5% | 34.7% | 30.3% |
| Completed masters | 16.6% | 15.1% | 11.5% |
| Completed professional degree | 4.1% | 4.2% | 3.3% |
| Completed doctorate | 2.5% | 1.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Castleton-on-Hudson. Using the proficiency score averages, the average test scores for Castleton-on-Hudson, NY schools is 54%. The average student to teacher ratio is n/a. In Castleton-on-Hudson, NY, an average of 92.0% of students have completed 8th grade and an average of 91.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Voorheesville, NY | 2,789 | 78% | 63.2% |
| East Greenbush, NY | 6,299 | 74% | 54.5% |
| Averill Park, NY | 1,466 | 74% | 53.8% |
| Valatie, NY | 1,525 | 68% | 42.4% |
| Ravena, NY | 3,181 | 67% | 39.6% |
| Castleton-on-Hudson, NY | 1,483 | 54% | 12.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Hackleburg, AL | 1,483 | 38% | 20.3% |
| Clyde, NC | 1,483 | 66% | 37.5% |
| Lone Pine, CA | 1,484 | 49% | 1.0% |
| Aberdeen, OH | 1,484 | 56% | 16.7% |
| Skidmore, TX | 1,484 | 50% | 4.9% |
| Castleton-on-Hudson, NY | 1,483 | 54% | 12.5% |
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