| Index | Lynbrook | New York | National |
| Average Test Scores | 68% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 7 | 4,060 | 79,221 |
| Total private schools | 2 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Lynbrook | New York | National |
| Completed 8th grade | 92.3% | 83.5% | 84.3% |
| Completed high school | 91.5% | 82.1% | 83.0% |
| Completed some college | 66.2% | 59.5% | 59.4% |
| Completed associate degree | 49.9% | 43.4% | 38.5% |
| Completed bachelors | 39.7% | 34.7% | 30.3% |
| Completed masters | 16.7% | 15.1% | 11.5% |
| Completed professional degree | 3.1% | 4.2% | 3.3% |
| Completed doctorate | 0.9% | 1.5% | 1.3% |
There are a total of 7 public schools, 2 private schools and n/a post-secondary schools in Lynbrook. Using the proficiency score averages, the average test scores for Lynbrook, NY schools is 68%. The average student to teacher ratio is n/a. In Lynbrook, NY, an average of 92.3% of students have completed 8th grade and an average of 91.5% 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% |
| Lynbrook, NY | 19,445 | 68% | 41.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Huntington, NY | 19,438 | 60% | 24.2% |
| Central Falls, RI | 19,437 | 26% | 46.9% |
| Orinda, CA | 19,461 | 87% | 81.4% |
| Boone, NC | 19,466 | 58% | 20.1% |
| Stillwater, MN | 19,471 | 70% | 46.6% |
| Lynbrook, NY | 19,445 | 68% | 41.8% |
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