| Index | Moriches | New York | National |
| Average Test Scores | 40% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 2 | 4,060 | 79,221 |
| Total private schools | n/a | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Moriches | New York | National |
| Completed 8th grade | 90.0% | 83.5% | 84.3% |
| Completed high school | 89.4% | 82.1% | 83.0% |
| Completed some college | 70.3% | 59.5% | 59.4% |
| Completed associate degree | 42.5% | 43.4% | 38.5% |
| Completed bachelors | 35.9% | 34.7% | 30.3% |
| Completed masters | 22.1% | 15.1% | 11.5% |
| Completed professional degree | 7.6% | 4.2% | 3.3% |
| Completed doctorate | 5.7% | 1.5% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Moriches. Using the proficiency score averages, the average test scores for Moriches, NY schools is 40%. The average student to teacher ratio is n/a. In Moriches, NY, an average of 90.0% of students have completed 8th grade and an average of 89.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Shoreham, NY | 375 | 82% | 69.8% |
| West Sayville, NY | 4,956 | 82% | 69.8% |
| Quogue, NY | 600 | 80% | 66.7% |
| Setauket-East Setauket, NY | 14,174 | 80% | 65.6% |
| Port Jefferson, NY | 8,016 | 77% | 60.8% |
| Moriches, NY | 2,485 | 40% | 17.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Sacaton, AZ | 2,484 | 9% | 82.3% |
| Charleston, AR | 2,483 | 55% | 14.6% |
| Muse, PA | 2,483 | 77% | 60.4% |
| Fort Pierre, SD | 2,487 | 50% | 3.5% |
| Owings, MD | 2,483 | 69% | 43.8% |
| Moriches, NY | 2,485 | 40% | 17.2% |
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