| Index | Commack | New York | National |
| Average Test Scores | 70% | 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 | 1 | 483 | 7,963 |
| Index | Commack | New York | National |
| Completed 8th grade | 95.7% | 83.5% | 84.3% |
| Completed high school | 95.3% | 82.1% | 83.0% |
| Completed some college | 74.2% | 59.5% | 59.4% |
| Completed associate degree | 57.5% | 43.4% | 38.5% |
| Completed bachelors | 50.0% | 34.7% | 30.3% |
| Completed masters | 23.7% | 15.1% | 11.5% |
| Completed professional degree | 6.1% | 4.2% | 3.3% |
| Completed doctorate | 1.9% | 1.5% | 1.3% |
There are a total of 7 public schools, 2 private schools and 1 post-secondary schools in Commack. Using the proficiency score averages, the average test scores for Commack, NY schools is 70%. The average student to teacher ratio is n/a. In Commack, NY, an average of 95.7% of students have completed 8th grade and an average of 95.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Jericho, NY | 13,928 | 90% | 87.1% |
| Old Bethpage, NY | 5,450 | 90% | 86.5% |
| Cold Spring Harbor, NY | 2,864 | 87% | 81.3% |
| Old Greenwich, CT | 6,980 | 87% | 80.2% |
| East Meadow, NY | 37,992 | 86% | 79.2% |
| Commack, NY | 36,903 | 70% | 46.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Lima, OH | 36,908 | 57% | 19.2% |
| Winter Springs, FL | 36,859 | 70% | 46.6% |
| Lake Worth, FL | 36,838 | 52% | 8.8% |
| Beloit, WI | 36,804 | 27% | 43.0% |
| Hilliard, OH | 37,023 | 69% | 43.5% |
| Commack, NY | 36,903 | 70% | 46.4% |
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