| Index | Sullivan | Indiana | National |
| Average Test Scores | 49% | 46% | 48% |
| Student/Teacher ratio | 18:1 | 22:1 | 16:1 |
| Total public schools | 3 | 1,755 | 79,221 |
| Total private schools | n/a | 675 | 24,874 |
| Total post-secondary schools | n/a | 141 | 7,963 |
| Index | Sullivan | Indiana | National |
| Completed 8th grade | 85.4% | 84.6% | 84.3% |
| Completed high school | 82.0% | 82.9% | 83.0% |
| Completed some college | 47.0% | 53.8% | 59.4% |
| Completed associate degree | 24.0% | 33.0% | 38.5% |
| Completed bachelors | 12.2% | 24.6% | 30.3% |
| Completed masters | 2.5% | 8.9% | 11.5% |
| Completed professional degree | 0.0% | 2.4% | 3.3% |
| Completed doctorate | 0.0% | 1.0% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Sullivan. Using the proficiency score averages, the average test scores for Sullivan, IN schools is 49%. The average student to teacher ratio is 18:1. In Sullivan, IN, an average of 85.4% of students have completed 8th grade and an average of 82.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hymera, IN | 989 | 50% | 4.2% |
| Linton, IN | 5,293 | 46% | 3.5% |
| Carlisle, IN | 544 | 46% | 4.7% |
| Jasonville, IN | 1,885 | 44% | 7.8% |
| Farmersburg, IN | 1,256 | 42% | 12.5% |
| Sullivan, IN | 4,081 | 49% | 1.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Herculaneum, MO | 4,081 | 56% | 16.7% |
| Whiteriver, AZ | 4,081 | 16% | 65.8% |
| Shrewsbury, NJ | 4,082 | 76% | 58.3% |
| Lisbon Falls, ME | 4,079 | 43% | 10.4% |
| Marine City, MI | 4,083 | 40% | 16.9% |
| Sullivan, IN | 4,081 | 49% | 1.3% |
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