| Index | Willimantic | Connecticut | National |
| Average Test Scores | 27% | 47% | 49% |
| Student/Teacher ratio | 12:1 | 14:1 | 16:1 |
| Total public schools | 9 | 654 | 79,221 |
| Total private schools | 2 | 207 | 24,874 |
| Total post-secondary schools | 2 | 81 | 7,963 |
| Index | Willimantic | Connecticut | National |
| Completed 8th grade | 76.0% | 88.0% | 84.3% |
| Completed high school | 71.8% | 86.9% | 83.0% |
| Completed some college | 44.4% | 62.9% | 59.4% |
| Completed associate degree | 24.5% | 45.5% | 38.5% |
| Completed bachelors | 17.6% | 38.0% | 30.3% |
| Completed masters | 8.5% | 16.8% | 11.5% |
| Completed professional degree | 1.7% | 4.6% | 3.3% |
| Completed doctorate | 0.6% | 1.7% | 1.3% |
There are a total of 9 public schools, 2 private schools and 2 post-secondary schools in Willimantic. Using the proficiency score averages, the average test scores for Willimantic, CT schools is 27%. The average student to teacher ratio is 12:1. In Willimantic, CT, an average of 76.0% of students have completed 8th grade and an average of 71.8% have completed high school.
| City, State | Population | Avg. Test Scores | National Avg. |
| Mansfield Center, CT | 969 | 76% | 54% |
| Storrs, CT | 16,059 | 65% | 32% |
| Moodus, CT | 1,202 | 62% | 27% |
| South Woodstock, CT | 1,246 | 58% | 17% |
| Colchester, CT | 4,475 | 56% | 13% |
| Willimantic, CT | 17,339 | 27% | 44% |
| City, State | Population | Avg. Test Scores | National Avg. |
| Huntington, IN | 17,340 | 68% | 39% |
| Bristol, VA | 17,340 | 72% | 47% |
| Beckley, WV | 17,348 | 41% | 17% |
| Anoka, MN | 17,325 | 50% | 1% |
| Marco Island, FL | 17,361 | 69% | 39% |
| Willimantic, CT | 17,339 | 27% | 44% |
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