| 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 |


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| 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 | 6,046 | 53% | 10.9% |
| Altenburg, MO | 357 | 45% | 6.3% |
| Vergennes, IL | 246 | 37% | 22.9% |
| Carbondale, IL | 26,321 | 34% | 29.3% |
| Du Quoin, IL | 5,883 | 32% | 33.3% |
| Harrison, IL | 959 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Bolivar, NY | 959 | 42% | 12.5% |
| Gowrie, IA | 959 | 72% | 50.0% |
| Mertztown, PA | 959 | 55% | 13.5% |
| Jonesville, SC | 959 | 36% | 26.0% |
| Cedarville, NJ | 959 | 44% | 8.3% |
| Harrison, IL | 959 | n/a |