| Index | Sea Cliff | New York | National |
| Average Test Scores | 92% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 1 | 4,060 | 79,221 |
| Total private schools | n/a | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Sea Cliff | New York | National |
| Completed 8th grade | 97.4% | 83.5% | 84.3% |
| Completed high school | 97.4% | 82.1% | 83.0% |
| Completed some college | 86.5% | 59.5% | 59.4% |
| Completed associate degree | 71.7% | 43.4% | 38.5% |
| Completed bachelors | 67.9% | 34.7% | 30.3% |
| Completed masters | 35.5% | 15.1% | 11.5% |
| Completed professional degree | 13.3% | 4.2% | 3.3% |
| Completed doctorate | 4.8% | 1.5% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Sea Cliff. Using the proficiency score averages, the average test scores for Sea Cliff, NY schools is 92%. The average student to teacher ratio is n/a. In Sea Cliff, NY, an average of 97.4% of students have completed 8th grade and an average of 97.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| 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% |
| Bronxville, NY | 6,450 | 88% | 82.3% |
| Sea Cliff, NY | 5,045 | 92% | 91.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Alva, OK | 5,046 | 38% | 21.4% |
| Maize, KS | 5,044 | 49% | 1.9% |
| Mattawa, WA | 5,040 | 23% | 52.7% |
| Lake City, MN | 5,050 | 55% | 14.6% |
| Kutztown, PA | 5,051 | 70% | 45.6% |
| Sea Cliff, NY | 5,045 | 92% | 91.7% |
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