| Index | Central Islip | New York | National |
| Average Test Scores | 38% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 8 | 4,060 | 79,221 |
| Total private schools | 1 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Central Islip | New York | National |
| Completed 8th grade | 69.2% | 83.5% | 84.3% |
| Completed high school | 67.6% | 82.1% | 83.0% |
| Completed some college | 40.2% | 59.5% | 59.4% |
| Completed associate degree | 22.6% | 43.4% | 38.5% |
| Completed bachelors | 16.6% | 34.7% | 30.3% |
| Completed masters | 6.6% | 15.1% | 11.5% |
| Completed professional degree | 1.8% | 4.2% | 3.3% |
| Completed doctorate | 0.3% | 1.5% | 1.3% |
There are a total of 8 public schools, 1 private schools and n/a post-secondary schools in Central Islip. Using the proficiency score averages, the average test scores for Central Islip, NY schools is 38%. The average student to teacher ratio is n/a. In Central Islip, NY, an average of 69.2% of students have completed 8th grade and an average of 67.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Old Bethpage, NY | 5,450 | 90% | 86.5% |
| Cold Spring Harbor, NY | 2,864 | 87% | 81.3% |
| Plainview, NY | 26,267 | 83% | 72.1% |
| West Sayville, NY | 4,956 | 82% | 69.8% |
| Hauppauge, NY | 19,661 | 80% | 66.3% |
| Central Islip, NY | 33,591 | 38% | 21.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Mason, OH | 33,592 | 87% | 81.8% |
| Deer Park, TX | 33,599 | 55% | 13.9% |
| Huntington Station, NY | 33,612 | 54% | 12.0% |
| DeLand, FL | 33,620 | 50% | 4.4% |
| Myrtle Beach, SC | 33,638 | 61% | 27.1% |
| Central Islip, NY | 33,591 | 38% | 21.3% |
Here are the best places to live in New York
Most Dangerous States In The US
Most Dangerous Cities In The US
Check out the 10 most dangerous cities in New York