| Index | Greenville | Illinois | National |
| Average Test Scores | 36% | 33% | 48% |
| Student/Teacher ratio | 23:1 | 18:1 | 16:1 |
| Total public schools | 3 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | 1 | 306 | 7,963 |
| Index | Greenville | Illinois | National |
| Completed 8th grade | 74.7% | 86.2% | 84.3% |
| Completed high school | 72.7% | 84.7% | 83.0% |
| Completed some college | 49.3% | 61.8% | 59.4% |
| Completed associate degree | 28.5% | 40.7% | 38.5% |
| Completed bachelors | 23.1% | 32.9% | 30.3% |
| Completed masters | 9.3% | 12.7% | 11.5% |
| Completed professional degree | 2.1% | 3.4% | 3.3% |
| Completed doctorate | 2.0% | 1.2% | 1.3% |
There are a total of 3 public schools, n/a private schools and 1 post-secondary schools in Greenville. Using the proficiency score averages, the average test scores for Greenville, IL schools is 36%. The average student to teacher ratio is 23:1. In Greenville, IL, an average of 74.7% of students have completed 8th grade and an average of 72.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Pocahontas, IL | 797 | 47% | 2.1% |
| Sorento, IL | 499 | 37% | 22.9% |
| Coffeen, IL | 640 | 25% | 47.9% |
| Mulberry Grove, IL | 847 | 21% | 57.3% |
| Greenville, IL | 6,725 | 36% | 26.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Gulf Breeze, FL | 6,725 | 78% | 61.5% |
| Demopolis, AL | 6,724 | 40% | 16.0% |
| Tallulah, LA | 6,722 | 35% | 27.9% |
| Tecumseh, OK | 6,721 | 27% | 43.2% |
| Cochituate, MA | 6,730 | 78% | 61.5% |
| Greenville, IL | 6,725 | 36% | 26.0% |
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