| Index | Collinsville | Illinois | National |
| Average Test Scores | 29% | 33% | 48% |
| Student/Teacher ratio | 18:1 | 18:1 | 16:1 |
| Total public schools | 10 | 3,938 | 79,221 |
| Total private schools | 4 | 1,438 | 24,874 |
| Total post-secondary schools | 1 | 306 | 7,963 |
| Index | Collinsville | Illinois | National |
| Completed 8th grade | 89.5% | 86.2% | 84.3% |
| Completed high school | 88.0% | 84.7% | 83.0% |
| Completed some college | 63.1% | 61.8% | 59.4% |
| Completed associate degree | 35.6% | 40.7% | 38.5% |
| Completed bachelors | 27.4% | 32.9% | 30.3% |
| Completed masters | 10.9% | 12.7% | 11.5% |
| Completed professional degree | 2.2% | 3.4% | 3.3% |
| Completed doctorate | 0.9% | 1.2% | 1.3% |
There are a total of 10 public schools, 4 private schools and 1 post-secondary schools in Collinsville. Using the proficiency score averages, the average test scores for Collinsville, IL schools is 29%. The average student to teacher ratio is 18:1. In Collinsville, IL, an average of 89.5% of students have completed 8th grade and an average of 88.0% 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% |
| Glen Carbon, IL | 12,468 | 57% | 18.8% |
| Alhambra, IL | 676 | 55% | 14.6% |
| Marine, IL | 994 | 55% | 13.5% |
| Collinsville, IL | 24,489 | 29% | 40.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Watauga, TX | 24,487 | 51% | 6.3% |
| Key West, FL | 24,495 | 59% | 23.5% |
| Brookings, SD | 24,479 | 51% | 5.6% |
| Ottumwa, IA | 24,505 | 60% | 25.3% |
| Fort Washington, MD | 24,468 | 23% | 51.7% |
| Collinsville, IL | 24,489 | 29% | 40.6% |
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