| Index | Greenville | Maine | National |
| Average Test Scores | 50% | 45% | 48% |
| Student/Teacher ratio | 11:1 | 14:1 | 16:1 |
| Total public schools | 2 | 345 | 79,221 |
| Total private schools | n/a | 89 | 24,874 |
| Total post-secondary schools | n/a | 45 | 7,963 |
| Index | Greenville | Maine | National |
| Completed 8th grade | 81.3% | 88.3% | 84.3% |
| Completed high school | 80.6% | 86.8% | 83.0% |
| Completed some college | 43.3% | 58.8% | 59.4% |
| Completed associate degree | 20.2% | 39.0% | 38.5% |
| Completed bachelors | 15.4% | 29.3% | 30.3% |
| Completed masters | 5.9% | 10.5% | 11.5% |
| Completed professional degree | 2.3% | 3.0% | 3.3% |
| Completed doctorate | 1.7% | 1.3% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Greenville. Using the proficiency score averages, the average test scores for Greenville, ME schools is 50%. The average student to teacher ratio is 11:1. In Greenville, ME, an average of 81.3% of students have completed 8th grade and an average of 80.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Greenville, ME | 1,203 | 50% | 3.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Wilton, NH | 1,203 | 50% | 3.5% |
| Edmundson, MO | 1,203 | 31% | 36.5% |
| Elbridge, NY | 1,203 | 40% | 17.7% |
| Gore, OK | 1,203 | 29% | 39.9% |
| Mount Gilead, NC | 1,202 | 34% | 28.5% |
| Greenville, ME | 1,203 | 50% | 3.1% |
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