| Index | Johnsonville | Illinois | National |
| Average Test Scores | 50% | 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 | Johnsonville | Illinois | National |
| Completed 8th grade | 91.9% | 86.2% | 84.3% |
| Completed high school | 89.2% | 84.7% | 83.0% |
| Completed some college | 45.9% | 61.8% | 59.4% |
| Completed associate degree | 27.0% | 40.7% | 38.5% |
| Completed bachelors | 8.1% | 32.9% | 30.3% |
| Completed masters | 2.7% | 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 Johnsonville. Using the proficiency score averages, the average test scores for Johnsonville, IL schools is 50%. The average student to teacher ratio is n/a. In Johnsonville, IL, an average of 91.9% of students have completed 8th grade and an average of 89.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Iuka, IL | 486 | 65% | 34.4% |
| Fairfield, IL | 4,912 | 40% | 17.3% |
| Jeffersonville, IL | 333 | 35% | 28.1% |
| Bluford, IL | 662 | 34% | 29.2% |
| Wayne City, IL | 934 | 31% | 35.4% |
| Johnsonville, IL | 50 | 50% | 4.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Idalia, CO | 50 | 44% | 7.8% |
| Nathalie, VA | 50 | 77% | 60.4% |
| Tonopah, AZ | 50 | 37% | 22.4% |
| Waverly, SD | 51 | 32% | 34.0% |
| Starkweather, ND | 49 | 45% | 6.3% |
| Johnsonville, IL | 50 | 50% | 4.2% |
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