| 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. |
| West Sayville, NY | 5,133 | 82% | 69.8% |
| Shoreham, NY | 390 | 82% | 69.8% |
| Quogue, NY | 623 | 80% | 66.7% |
| Setauket-East Setauket, NY | 14,614 | 80% | 65.6% |
| Port Jefferson, NY | 8,248 | 77% | 60.8% |
| Moriches, NY | 2,536 | 40% | 17.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Coats, NC | 2,536 | 35% | 27.1% |
| Owings, MD | 2,536 | 69% | 43.8% |
| Fredonia, WI | 2,535 | 42% | 12.2% |
| Jacksboro, TN | 2,535 | 36% | 26.0% |
| Nixon, TX | 2,538 | 48% | 0.5% |
| Moriches, NY | 2,536 | 40% | 17.2% |
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