| Index | Islip Terrace | New York | National |
| Average Test Scores | 64% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 5 | 4,060 | 79,221 |
| Total private schools | n/a | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
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| Index | Islip Terrace | New York | National |
| Completed 8th grade | 90.6% | 83.5% | 84.3% |
| Completed high school | 90.6% | 82.1% | 83.0% |
| Completed some college | 55.5% | 59.5% | 59.4% |
| Completed associate degree | 35.0% | 43.4% | 38.5% |
| Completed bachelors | 26.9% | 34.7% | 30.3% |
| Completed masters | 10.6% | 15.1% | 11.5% |
| Completed professional degree | 1.2% | 4.2% | 3.3% |
| Completed doctorate | 0.3% | 1.5% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Islip Terrace. Using the proficiency score averages, the average test scores for Islip Terrace, NY schools is 64%. The average student to teacher ratio is n/a. In Islip Terrace, NY, an average of 90.6% of students have completed 8th grade and an average of 90.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Old Bethpage, NY | 5,640 | 90% | 86.5% |
| Cold Spring Harbor, NY | 2,967 | 87% | 81.3% |
| Plainview, NY | 26,865 | 83% | 72.1% |
| West Sayville, NY | 5,133 | 82% | 69.8% |
| Shoreham, NY | 390 | 82% | 69.8% |
| Islip Terrace, NY | 5,399 | 64% | 33.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Highwood, IL | 5,399 | 43% | 11.5% |
| Calverton, NY | 5,399 | 35% | 28.1% |
| North Oaks, MN | 5,400 | 77% | 60.4% |
| Palermo, CA | 5,402 | 37% | 23.4% |
| Fruitland, MD | 5,402 | 35% | 27.6% |
| Islip Terrace, NY | 5,399 | 64% | 33.3% |
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