| Index | Locust Valley | New York | National |
| Average Test Scores | 84% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 3 | 4,060 | 79,221 |
| Total private schools | 2 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Locust Valley | New York | National |
| Completed 8th grade | 88.8% | 83.5% | 84.3% |
| Completed high school | 86.4% | 82.1% | 83.0% |
| Completed some college | 63.0% | 59.5% | 59.4% |
| Completed associate degree | 46.3% | 43.4% | 38.5% |
| Completed bachelors | 38.3% | 34.7% | 30.3% |
| Completed masters | 14.5% | 15.1% | 11.5% |
| Completed professional degree | 3.2% | 4.2% | 3.3% |
| Completed doctorate | 0.6% | 1.5% | 1.3% |
There are a total of 3 public schools, 2 private schools and n/a post-secondary schools in Locust Valley. Using the proficiency score averages, the average test scores for Locust Valley, NY schools is 84%. The average student to teacher ratio is n/a. In Locust Valley, NY, an average of 88.8% of students have completed 8th grade and an average of 86.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Sea Cliff, NY | 5,212 | 92% | 91.7% |
| Old Westbury, NY | 4,784 | 91% | 88.5% |
| Jericho, NY | 14,448 | 90% | 87.1% |
| Old Bethpage, NY | 5,640 | 90% | 86.5% |
| Glen Head, NY | 4,979 | 89% | 85.7% |
| Locust Valley, NY | 3,597 | 84% | 75.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Red Bud, IL | 3,599 | 33% | 31.3% |
| Marianna, AR | 3,599 | 15% | 69.3% |
| Etowah, TN | 3,600 | 36% | 26.0% |
| Valhalla, NY | 3,594 | 56% | 17.4% |
| Wilkesboro, NC | 3,593 | 54% | 12.5% |
| Locust Valley, NY | 3,597 | 84% | 75.3% |
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