| Index | Uniondale | New York | National |
| Average Test Scores | 55% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 6 | 4,060 | 79,221 |
| Total private schools | 3 | 1,092 | 24,874 |
| Total post-secondary schools | 1 | 483 | 7,963 |


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| Index | Uniondale | New York | National |
| Completed 8th grade | 77.0% | 83.5% | 84.3% |
| Completed high school | 75.7% | 82.1% | 83.0% |
| Completed some college | 49.4% | 59.5% | 59.4% |
| Completed associate degree | 34.1% | 43.4% | 38.5% |
| Completed bachelors | 26.4% | 34.7% | 30.3% |
| Completed masters | 10.7% | 15.1% | 11.5% |
| Completed professional degree | 2.9% | 4.2% | 3.3% |
| Completed doctorate | 0.8% | 1.5% | 1.3% |
There are a total of 6 public schools, 3 private schools and 1 post-secondary schools in Uniondale. Using the proficiency score averages, the average test scores for Uniondale, NY schools is 55%. The average student to teacher ratio is n/a. In Uniondale, NY, an average of 77.0% of students have completed 8th grade and an average of 75.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Sea Cliff, NY | 5,212 | 92% | 91.7% |
| Cedarhurst, NY | 6,786 | 91% | 89.6% |
| Old Westbury, NY | 4,784 | 91% | 88.5% |
| Jericho, NY | 14,448 | 90% | 87.1% |
| Old Bethpage, NY | 5,640 | 90% | 86.5% |
| Uniondale, NY | 33,340 | 55% | 14.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Statesboro, GA | 33,360 | 38% | 20.4% |
| Jackson, MI | 33,318 | 31% | 34.6% |
| Graham, WA | 33,304 | 58% | 21.6% |
| Woodstock, GA | 33,394 | 59% | 23.1% |
| Rome, NY | 33,399 | 35% | 26.3% |
| Uniondale, NY | 33,340 | 55% | 14.9% |