| Index | Stewart Manor | New York | National |
| Average Test Scores | 70% | 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 | Stewart Manor | New York | National |
| Completed 8th grade | 96.5% | 83.5% | 84.3% |
| Completed high school | 95.8% | 82.1% | 83.0% |
| Completed some college | 74.5% | 59.5% | 59.4% |
| Completed associate degree | 59.2% | 43.4% | 38.5% |
| Completed bachelors | 53.5% | 34.7% | 30.3% |
| Completed masters | 24.0% | 15.1% | 11.5% |
| Completed professional degree | 6.4% | 4.2% | 3.3% |
| Completed doctorate | 1.7% | 1.5% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Stewart Manor. Using the proficiency score averages, the average test scores for Stewart Manor, NY schools is 70%. The average student to teacher ratio is n/a. In Stewart Manor, NY, an average of 96.5% of students have completed 8th grade and an average of 95.8% 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% |
| Stewart Manor, NY | 1,966 | 70% | 44.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Garyville, LA | 1,966 | 51% | 5.2% |
| Laton, CA | 1,967 | 25% | 48.6% |
| Fishkill, NY | 1,967 | 59% | 22.6% |
| Prophetstown, IL | 1,965 | 33% | 30.9% |
| Cosmopolis, WA | 1,968 | 54% | 11.5% |
| Stewart Manor, NY | 1,966 | 70% | 44.8% |
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