| Index | Ansonia | Connecticut | National |
| Average Test Scores | 31% | 53% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 6 | 654 | 79,221 |
| Total private schools | 3 | 207 | 24,874 |
| Total post-secondary schools | 1 | 81 | 7,963 |
| Index | Ansonia | Connecticut | National |
| Completed 8th grade | 83.5% | 88.0% | 84.3% |
| Completed high school | 81.5% | 86.9% | 83.0% |
| Completed some college | 44.1% | 62.9% | 59.4% |
| Completed associate degree | 24.7% | 45.5% | 38.5% |
| Completed bachelors | 16.4% | 38.0% | 30.3% |
| Completed masters | 6.9% | 16.8% | 11.5% |
| Completed professional degree | 0.9% | 4.6% | 3.3% |
| Completed doctorate | 0.2% | 1.7% | 1.3% |
There are a total of 6 public schools, 3 private schools and 1 post-secondary schools in Ansonia. Using the proficiency score averages, the average test scores for Ansonia, CT schools is 31%. The average student to teacher ratio is 15:1. In Ansonia, CT, an average of 83.5% of students have completed 8th grade and an average of 81.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Trumbull, CT | 36,477 | 79% | 64.0% |
| Cheshire Village, CT | 6,491 | 78% | 62.0% |
| Southport, CT | 1,710 | 77% | 60.4% |
| Orange, CT | 13,928 | 75% | 55.7% |
| Newtown, CT | 1,921 | 71% | 48.8% |
| Ansonia, CT | 18,709 | 31% | 35.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Berea, OH | 18,713 | 71% | 47.4% |
| Point Pleasant, NJ | 18,686 | 62% | 28.4% |
| Ottawa, IL | 18,742 | 33% | 32.3% |
| Willimantic, CT | 18,669 | 29% | 38.9% |
| Twinsburg, OH | 18,754 | 83% | 73.4% |
| Ansonia, CT | 18,709 | 31% | 35.8% |
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