| Index | South Jacksonville | Illinois | National |
| Average Test Scores | 25% | 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 | South Jacksonville | Illinois | National |
| Completed 8th grade | 91.1% | 86.2% | 84.3% |
| Completed high school | 89.8% | 84.7% | 83.0% |
| Completed some college | 51.6% | 61.8% | 59.4% |
| Completed associate degree | 29.6% | 40.7% | 38.5% |
| Completed bachelors | 23.7% | 32.9% | 30.3% |
| Completed masters | 10.1% | 12.7% | 11.5% |
| Completed professional degree | 2.3% | 3.4% | 3.3% |
| Completed doctorate | 0.5% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in South Jacksonville. Using the proficiency score averages, the average test scores for South Jacksonville, IL schools is 25%. The average student to teacher ratio is n/a. In South Jacksonville, IL, an average of 91.1% of students have completed 8th grade and an average of 89.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Concord, IL | 170 | 41% | 15.1% |
| Murrayville, IL | 582 | 32% | 33.3% |
| Roodhouse, IL | 1,656 | 32% | 34.4% |
| Winchester, IL | 1,717 | 31% | 34.9% |
| Franklin, IL | 624 | 30% | 38.5% |
| South Jacksonville, IL | 3,132 | 25% | 49.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Orchard Park, NY | 3,131 | 67% | 40.5% |
| West Simsbury, CT | 3,131 | 77% | 60.4% |
| South Point, OH | 3,130 | 60% | 25.6% |
| San Saba, TX | 3,134 | 43% | 10.9% |
| Salmon, ID | 3,135 | 46% | 5.2% |
| South Jacksonville, IL | 3,132 | 25% | 49.0% |
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