| 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 | 5,045 | 92% | 91.7% |
| Old Westbury, NY | 4,618 | 91% | 88.5% |
| Jericho, NY | 13,928 | 90% | 87.1% |
| Old Bethpage, NY | 5,450 | 90% | 86.5% |
| Glen Head, NY | 4,843 | 89% | 85.7% |
| Locust Valley, NY | 3,485 | 84% | 75.3% |
| City | Population | Avg. Test Scores | National Avg. |
| McCall, ID | 3,485 | 65% | 35.4% |
| Blackshear, GA | 3,484 | 61% | 27.3% |
| York Harbor, ME | 3,484 | 66% | 36.5% |
| Gooding, ID | 3,487 | 39% | 18.0% |
| Narragansett Pier, RI | 3,487 | 52% | 7.3% |
| Locust Valley, NY | 3,485 | 84% | 75.3% |
Here are the best places to live in New York
See the best places to live in Locust Valley
Check out the 10 safest cities in New York
These are the largest cities in New York