| Index | Glen Carbon | Illinois | National |
| Average Test Scores | 57% | 33% | 48% |
| Student/Teacher ratio | 14:1 | 18:1 | 16:1 |
| Total public schools | 1 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Glen Carbon | Illinois | National |
| Completed 8th grade | 96.0% | 86.2% | 84.3% |
| Completed high school | 94.8% | 84.7% | 83.0% |
| Completed some college | 80.3% | 61.8% | 59.4% |
| Completed associate degree | 62.7% | 40.7% | 38.5% |
| Completed bachelors | 52.1% | 32.9% | 30.3% |
| Completed masters | 20.6% | 12.7% | 11.5% |
| Completed professional degree | 6.7% | 3.4% | 3.3% |
| Completed doctorate | 3.9% | 1.2% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Glen Carbon. Using the proficiency score averages, the average test scores for Glen Carbon, IL schools is 57%. The average student to teacher ratio is 14:1. In Glen Carbon, IL, an average of 96.0% of students have completed 8th grade and an average of 94.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| St. Jacob, IL | 1,529 | 67% | 39.6% |
| Maryville, IL | 7,962 | 65% | 34.4% |
| Worden, IL | 875 | 57% | 18.8% |
| Alhambra, IL | 676 | 55% | 14.6% |
| Marine, IL | 994 | 55% | 13.5% |
| Glen Carbon, IL | 12,468 | 57% | 18.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Choctaw, OK | 12,467 | 45% | 5.4% |
| Marysville, CA | 12,467 | 35% | 27.4% |
| Bonita, CA | 12,470 | 55% | 14.9% |
| Boone, IA | 12,470 | 66% | 37.8% |
| Mountain Home, AR | 12,463 | 50% | 4.4% |
| Glen Carbon, IL | 12,468 | 57% | 18.8% |
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