| Index | Calais | Maine | National |
| Average Test Scores | 40% | 45% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 4 | 345 | 79,221 |
| Total private schools | n/a | 89 | 24,874 |
| Total post-secondary schools | 1 | 45 | 7,963 |
| Index | Calais | Maine | National |
| Completed 8th grade | 81.8% | 88.3% | 84.3% |
| Completed high school | 77.5% | 86.8% | 83.0% |
| Completed some college | 48.8% | 58.8% | 59.4% |
| Completed associate degree | 28.4% | 39.0% | 38.5% |
| Completed bachelors | 13.6% | 29.3% | 30.3% |
| Completed masters | 4.1% | 10.5% | 11.5% |
| Completed professional degree | 0.9% | 3.0% | 3.3% |
| Completed doctorate | 0.3% | 1.3% | 1.3% |
There are a total of 4 public schools, n/a private schools and 1 post-secondary schools in Calais. Using the proficiency score averages, the average test scores for Calais, ME schools is 40%. The average student to teacher ratio is 15:1. In Calais, ME, an average of 81.8% of students have completed 8th grade and an average of 77.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Woodland, ME | 1,106 | 37% | 22.9% |
| Calais, ME | 3,011 | 40% | 17.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Hamilton, TX | 3,011 | 48% | 0.3% |
| Royston, GA | 3,009 | 34% | 29.2% |
| Round Lake Heights, IL | 3,009 | 16% | 67.2% |
| Alva, FL | 3,013 | 56% | 15.6% |
| Mohnton, PA | 3,013 | 64% | 33.3% |
| Calais, ME | 3,011 | 40% | 17.7% |
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