| Index | Mill River | New Haven | Connecticut |
| Average Test Scores | n/a | 28% | 53% |
| Student/Teacher ratio | n/a | 29:1 | 14:1 |
| Total public schools | n/a | 53 | 654 |
| Total private schools | n/a | 14 | 207 |
| Total post-secondary schools | n/a | 5 | 81 |
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| Index | Mill River | New Haven | Connecticut |
| Completed 8th grade | 77.2% | 81.3% | 88.0% |
| Completed high school | 76.5% | 79.8% | 86.9% |
| Completed some college | 58.9% | 53.6% | 62.9% |
| Completed associate degree | 47.5% | 38.6% | 45.5% |
| Completed bachelors | 43.6% | 34.2% | 38.0% |
| Completed masters | 25.6% | 18.7% | 16.8% |
| Completed professional degree | 12.7% | 8.6% | 4.6% |
| Completed doctorate | 7.0% | 4.5% | 1.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Guilford Center, CT | 2,653 | 81% | 67.7% |
| Cheshire Village, CT | 6,491 | 78% | 62.0% |
| Orange, CT | 13,928 | 75% | 55.7% |
| North Haven, CT | 23,665 | 67% | 39.1% |
| Shelton, CT | 41,162 | 67% | 39.1% |
| New Haven, CT | 130,381 | 28% | 40.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Stamford, CT | 130,057 | 46% | 3.3% |
| Kent, WA | 130,038 | 47% | 2.3% |
| Concord, CA | 129,227 | 34% | 28.7% |
| Round Rock, TX | 128,812 | 56% | 15.9% |
| Elizabeth, NJ | 128,484 | 38% | 21.3% |
| New Haven, CT | 130,381 | 28% | 40.6% |
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