| Index | Centereach | New York | National |
| Average Test Scores | 55% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 8 | 4,060 | 79,221 |
| Total private schools | 1 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Centereach | New York | National |
| Completed 8th grade | 90.1% | 83.5% | 84.3% |
| Completed high school | 89.3% | 82.1% | 83.0% |
| Completed some college | 61.2% | 59.5% | 59.4% |
| Completed associate degree | 40.9% | 43.4% | 38.5% |
| Completed bachelors | 30.7% | 34.7% | 30.3% |
| Completed masters | 13.3% | 15.1% | 11.5% |
| Completed professional degree | 3.2% | 4.2% | 3.3% |
| Completed doctorate | 1.6% | 1.5% | 1.3% |
There are a total of 8 public schools, 1 private schools and n/a post-secondary schools in Centereach. Using the proficiency score averages, the average test scores for Centereach, NY schools is 55%. The average student to teacher ratio is n/a. In Centereach, NY, an average of 90.1% of students have completed 8th grade and an average of 89.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| West Sayville, NY | 4,956 | 82% | 69.8% |
| Shoreham, NY | 375 | 82% | 69.8% |
| Hauppauge, NY | 19,661 | 80% | 66.3% |
| Setauket-East Setauket, NY | 14,174 | 80% | 65.6% |
| Elwood, NY | 11,582 | 79% | 63.5% |
| Centereach, NY | 31,100 | 55% | 13.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Saratoga, CA | 31,084 | 82% | 71.2% |
| Hopkinsville, KY | 31,052 | 38% | 20.5% |
| Princeton, NJ | 31,161 | 72% | 50.9% |
| Needham, MA | 31,177 | 74% | 54.8% |
| Miami Lakes, FL | 31,021 | 60% | 25.8% |
| Centereach, NY | 31,100 | 55% | 13.7% |
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