| Index | Fairmont City | Illinois | National |
| Average Test Scores | n/a | 33% | 48% |
| Student/Teacher ratio | n/a | 18:1 | 16:1 |
| Total public schools | n/a | 3,938 | 79,221 |
| Total private schools | 1 | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |


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| Index | Fairmont City | Illinois | National |
| Completed 8th grade | 59.2% | 86.2% | 84.3% |
| Completed high school | 54.8% | 84.7% | 83.0% |
| Completed some college | 23.5% | 61.8% | 59.4% |
| Completed associate degree | 7.1% | 40.7% | 38.5% |
| Completed bachelors | 2.7% | 32.9% | 30.3% |
| Completed masters | 0.7% | 12.7% | 11.5% |
| Completed professional degree | 0.3% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, 1 private schools and n/a post-secondary schools in Fairmont City. Using the proficiency score averages, the average test scores for Fairmont City, IL schools is n/a. The average student to teacher ratio is n/a. In Fairmont City, IL, an average of 59.2% of students have completed 8th grade and an average of 54.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clayton, MO | 16,763 | 73% | 52.7% |
| Brentwood, MO | 7,986 | 70% | 45.6% |
| Olivette, MO | 7,837 | 70% | 44.8% |
| Maryville, IL | 7,962 | 65% | 34.4% |
| Webster Groves, MO | 22,906 | 64% | 32.8% |
| Fairmont City, IL | 2,082 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Bellevue, IA | 2,082 | 75% | 55.2% |
| Watervliet, MI | 2,082 | 37% | 22.7% |
| Genoa, OH | 2,082 | 71% | 46.9% |
| Blossburg, PA | 2,083 | 32% | 33.3% |
| Greenwich, NY | 2,083 | 62% | 28.6% |
| Fairmont City, IL | 2,082 | n/a |