| Index | Westbury | New York | National |
| Average Test Scores | 56% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 10 | 4,060 | 79,221 |
| Total private schools | 3 | 1,092 | 24,874 |
| Total post-secondary schools | 1 | 483 | 7,963 |
| Index | Westbury | New York | National |
| Completed 8th grade | 84.0% | 83.5% | 84.3% |
| Completed high school | 82.8% | 82.1% | 83.0% |
| Completed some college | 60.5% | 59.5% | 59.4% |
| Completed associate degree | 47.3% | 43.4% | 38.5% |
| Completed bachelors | 37.1% | 34.7% | 30.3% |
| Completed masters | 17.3% | 15.1% | 11.5% |
| Completed professional degree | 6.4% | 4.2% | 3.3% |
| Completed doctorate | 1.9% | 1.5% | 1.3% |
There are a total of 10 public schools, 3 private schools and 1 post-secondary schools in Westbury. Using the proficiency score averages, the average test scores for Westbury, NY schools is 56%. The average student to teacher ratio is n/a. In Westbury, NY, an average of 84.0% of students have completed 8th grade and an average of 82.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Sea Cliff, NY | 5,045 | 92% | 91.7% |
| Cedarhurst, NY | 6,642 | 91% | 89.6% |
| Old Westbury, NY | 4,618 | 91% | 88.5% |
| Jericho, NY | 13,928 | 90% | 87.1% |
| Old Bethpage, NY | 5,450 | 90% | 86.5% |
| Westbury, NY | 15,339 | 56% | 15.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Clarksdale, MS | 15,342 | 21% | 56.1% |
| Centerton, AR | 15,345 | 60% | 24.0% |
| Clearlake, CA | 15,329 | 33% | 31.5% |
| Berkley, MI | 15,352 | 61% | 26.7% |
| Americus, GA | 15,319 | 27% | 42.9% |
| Westbury, NY | 15,339 | 56% | 15.6% |
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