| Index | Holbrook | New York | National |
| Average Test Scores | 48% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 4 | 4,060 | 79,221 |
| Total private schools | 1 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Holbrook | New York | National |
| Completed 8th grade | 92.2% | 83.5% | 84.3% |
| Completed high school | 92.0% | 82.1% | 83.0% |
| Completed some college | 62.9% | 59.5% | 59.4% |
| Completed associate degree | 43.4% | 43.4% | 38.5% |
| Completed bachelors | 33.4% | 34.7% | 30.3% |
| Completed masters | 16.0% | 15.1% | 11.5% |
| Completed professional degree | 2.5% | 4.2% | 3.3% |
| Completed doctorate | 0.8% | 1.5% | 1.3% |
There are a total of 4 public schools, 1 private schools and n/a post-secondary schools in Holbrook. Using the proficiency score averages, the average test scores for Holbrook, NY schools is 48%. The average student to teacher ratio is n/a. In Holbrook, NY, an average of 92.2% of students have completed 8th grade and an average of 92.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| West Sayville, NY | 4,956 | 82% | 69.8% |
| Shoreham, NY | 375 | 82% | 69.8% |
| Hauppauge, NY | 19,661 | 80% | 66.3% |
| Setauket-East Setauket, NY | 14,174 | 80% | 65.6% |
| Elwood, NY | 11,582 | 79% | 63.5% |
| Holbrook, NY | 25,794 | 48% | 1.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Lebanon, PA | 25,779 | 45% | 5.9% |
| Kankakee, IL | 25,818 | 22% | 54.5% |
| Mercer Island, WA | 25,820 | 85% | 77.8% |
| Mauldin, SC | 25,829 | 69% | 42.7% |
| Hanahan, SC | 25,743 | 58% | 20.8% |
| Holbrook, NY | 25,794 | 48% | 1.0% |
Here are the best places to live in New York
Most Dangerous Cities In The US
Check out the 10 safest cities in New York
Most Dangerous States In The US