| Index | Chatham | Illinois | National |
| Average Test Scores | 42% | 33% | 48% |
| Student/Teacher ratio | 30:1 | 18:1 | 16:1 |
| Total public schools | 5 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Chatham | Illinois | National |
| Completed 8th grade | 96.0% | 86.2% | 84.3% |
| Completed high school | 95.8% | 84.7% | 83.0% |
| Completed some college | 78.7% | 61.8% | 59.4% |
| Completed associate degree | 57.9% | 40.7% | 38.5% |
| Completed bachelors | 48.8% | 32.9% | 30.3% |
| Completed masters | 16.2% | 12.7% | 11.5% |
| Completed professional degree | 3.3% | 3.4% | 3.3% |
| Completed doctorate | 1.5% | 1.2% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Chatham. Using the proficiency score averages, the average test scores for Chatham, IL schools is 42%. The average student to teacher ratio is 30:1. In Chatham, IL, an average of 96.0% of students have completed 8th grade and an average of 95.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| New Berlin, IL | 1,324 | 39% | 19.4% |
| Pleasant Plains, IL | 718 | 38% | 20.1% |
| Rochester, IL | 3,778 | 36% | 24.7% |
| Divernon, IL | 1,194 | 36% | 25.0% |
| Virden, IL | 3,444 | 35% | 28.1% |
| Chatham, IL | 13,231 | 42% | 11.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Baker, LA | 13,233 | 45% | 7.0% |
| Glenn Heights, TX | 13,228 | 42% | 11.7% |
| McFarland, CA | 13,244 | 33% | 31.6% |
| Lahaina, HI | 13,216 | 38% | 20.8% |
| Bedford, IN | 13,246 | 45% | 5.4% |
| Chatham, IL | 13,231 | 42% | 11.6% |
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