| 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 |


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| 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 | 5,640 | 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% |
| Hauppauge, NY | 20,417 | 80% | 66.3% |
| East Islip, NY | 13,085 | 60% | 24.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Woodland Park, NJ | 13,086 | 49% | 1.0% |
| Smithfield, NC | 13,082 | 43% | 11.5% |
| Richmond, TX | 13,080 | 59% | 23.2% |
| Orangeburg, SC | 13,075 | 32% | 32.8% |
| Commerce, CA | 13,066 | 34% | 28.5% |
| East Islip, NY | 13,085 | 60% | 24.0% |