| Index | Harrison | 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 | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Harrison | Illinois | National |
| Completed 8th grade | 88.2% | 86.2% | 84.3% |
| Completed high school | 83.1% | 84.7% | 83.0% |
| Completed some college | 60.7% | 61.8% | 59.4% |
| Completed associate degree | 37.0% | 40.7% | 38.5% |
| Completed bachelors | 23.9% | 32.9% | 30.3% |
| Completed masters | 5.9% | 12.7% | 11.5% |
| Completed professional degree | 0.0% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Harrison. Using the proficiency score averages, the average test scores for Harrison, IL schools is n/a. The average student to teacher ratio is n/a. In Harrison, IL, an average of 88.2% of students have completed 8th grade and an average of 83.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Carterville, IL | 5,861 | 53% | 10.9% |
| Altenburg, MO | 345 | 45% | 6.3% |
| Vergennes, IL | 238 | 37% | 22.9% |
| Carbondale, IL | 25,400 | 34% | 29.3% |
| Du Quoin, IL | 5,723 | 32% | 33.3% |
| Harrison, IL | 934 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Beckville, TX | 934 | 58% | 20.3% |
| Wayne City, IL | 934 | 31% | 35.4% |
| Blue Lake, CA | 934 | 44% | 9.4% |
| Inkom, ID | 934 | 62% | 29.2% |
| Humphrey, NE | 934 | 57% | 19.3% |
| Harrison, IL | 934 | n/a |
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