| Index | East Islip | New York | National |
| Average Test Scores | 60% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 2 | 4,060 | 79,221 |
| Total private schools | 3 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | East Islip | New York | National |
| Completed 8th grade | 91.6% | 83.5% | 84.3% |
| Completed high school | 91.1% | 82.1% | 83.0% |
| Completed some college | 63.9% | 59.5% | 59.4% |
| Completed associate degree | 49.4% | 43.4% | 38.5% |
| Completed bachelors | 41.5% | 34.7% | 30.3% |
| Completed masters | 20.9% | 15.1% | 11.5% |
| Completed professional degree | 3.7% | 4.2% | 3.3% |
| Completed doctorate | 0.5% | 1.5% | 1.3% |
There are a total of 2 public schools, 3 private schools and n/a post-secondary schools in East Islip. Using the proficiency score averages, the average test scores for East Islip, NY schools is 60%. The average student to teacher ratio is n/a. In East Islip, NY, an average of 91.6% of students have completed 8th grade and an average of 91.1% 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% |
| East Islip, NY | 12,722 | 60% | 24.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Wickliffe, OH | 12,720 | 64% | 33.0% |
| Geneva, NY | 12,720 | 45% | 6.6% |
| Tehachapi, CA | 12,718 | 41% | 14.9% |
| Port Neches, TX | 12,729 | 54% | 12.1% |
| Orangeburg, SC | 12,713 | 32% | 32.8% |
| East Islip, NY | 12,722 | 60% | 24.0% |
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