| Index | Cousins Island | Maine | National |
| Average Test Scores | n/a | 45% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 345 | 79,221 |
| Total private schools | n/a | 89 | 24,874 |
| Total post-secondary schools | n/a | 45 | 7,963 |
| Index | Cousins Island | Maine | National |
| Completed 8th grade | 98.3% | 88.3% | 84.3% |
| Completed high school | 98.3% | 86.8% | 83.0% |
| Completed some college | 90.2% | 58.8% | 59.4% |
| Completed associate degree | 82.5% | 39.0% | 38.5% |
| Completed bachelors | 77.8% | 29.3% | 30.3% |
| Completed masters | 37.1% | 10.5% | 11.5% |
| Completed professional degree | 15.4% | 3.0% | 3.3% |
| Completed doctorate | 6.6% | 1.3% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Cousins Island. Using the proficiency score averages, the average test scores for Cousins Island, ME schools is n/a. The average student to teacher ratio is n/a. In Cousins Island, ME, an average of 98.3% of students have completed 8th grade and an average of 98.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Falmouth, ME | 1,877 | 75% | 55.9% |
| Yarmouth, ME | 5,752 | 74% | 53.5% |
| Cumberland Center, ME | 2,944 | 72% | 49.7% |
| Scarborough, ME | 5,268 | 65% | 35.1% |
| Freeport, ME | 1,879 | 60% | 25.3% |
| Cousins Island, ME | 521 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Seymour, IA | 521 | 52% | 8.3% |
| Wells, NY | 521 | 57% | 18.8% |
| McArthur, CA | 521 | 52% | 8.9% |
| Summertown, TN | 521 | 39% | 19.3% |
| Herman, MN | 521 | 60% | 25.0% |
| Cousins Island, ME | 521 | n/a |
Here are the best places to live in Maine
These are the 10 cheapest cities in Maine
These are the largest cities in Maine
Check out the 10 most dangerous cities in Maine