| Index | Millbrook | New York | National |
| Average Test Scores | 68% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 4 | 4,060 | 79,221 |
| Total private schools | 5 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Millbrook | New York | National |
| Completed 8th grade | 93.0% | 83.5% | 84.3% |
| Completed high school | 92.1% | 82.1% | 83.0% |
| Completed some college | 73.4% | 59.5% | 59.4% |
| Completed associate degree | 54.2% | 43.4% | 38.5% |
| Completed bachelors | 45.2% | 34.7% | 30.3% |
| Completed masters | 23.2% | 15.1% | 11.5% |
| Completed professional degree | 6.7% | 4.2% | 3.3% |
| Completed doctorate | 3.9% | 1.5% | 1.3% |
There are a total of 4 public schools, 5 private schools and n/a post-secondary schools in Millbrook. Using the proficiency score averages, the average test scores for Millbrook, NY schools is 68%. The average student to teacher ratio is n/a. In Millbrook, NY, an average of 93.0% of students have completed 8th grade and an average of 92.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hopewell Junction, NY | 725 | 74% | 54.9% |
| Lakeville, CT | 830 | 72% | 50.0% |
| Red Hook, NY | 2,134 | 69% | 42.7% |
| Rhinebeck, NY | 2,565 | 68% | 41.3% |
| Freedom Plains, NY | 697 | 64% | 33.3% |
| Millbrook, NY | 1,342 | 68% | 41.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Gray, TN | 1,342 | 49% | 1.0% |
| Albion, PA | 1,342 | 67% | 38.5% |
| Independence, WI | 1,342 | 32% | 33.0% |
| Kittitas, WA | 1,342 | 49% | 2.1% |
| Mendon, UT | 1,342 | 65% | 35.4% |
| Millbrook, NY | 1,342 | 68% | 41.7% |
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