| Index | Miller Place | New York | National |
| Average Test Scores | 66% | 56% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 4 | 4,060 | 79,221 |
| Total private schools | 1 | 1,092 | 24,874 |
| Total post-secondary schools | n/a | 483 | 7,963 |
| Index | Miller Place | New York | National |
| Completed 8th grade | 95.6% | 83.5% | 84.3% |
| Completed high school | 95.6% | 82.1% | 83.0% |
| Completed some college | 73.9% | 59.5% | 59.4% |
| Completed associate degree | 55.8% | 43.4% | 38.5% |
| Completed bachelors | 47.6% | 34.7% | 30.3% |
| Completed masters | 23.7% | 15.1% | 11.5% |
| Completed professional degree | 6.2% | 4.2% | 3.3% |
| Completed doctorate | 3.8% | 1.5% | 1.3% |
There are a total of 4 public schools, 1 private schools and n/a post-secondary schools in Miller Place. Using the proficiency score averages, the average test scores for Miller Place, NY schools is 66%. The average student to teacher ratio is n/a. In Miller Place, NY, an average of 95.6% of students have completed 8th grade and an average of 95.6% 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% |
| Port Jefferson, NY | 8,016 | 77% | 60.8% |
| Miller Place, NY | 12,775 | 66% | 37.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Mercerville, NJ | 12,783 | 50% | 4.2% |
| Cornelius, OR | 12,767 | 33% | 31.9% |
| Cypress Lake, FL | 12,766 | 91% | 89.6% |
| Manorville, NY | 12,764 | 59% | 23.4% |
| Harrison, OH | 12,763 | 79% | 64.4% |
| Miller Place, NY | 12,775 | 66% | 37.8% |
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