| Index | Sullivan | Missouri | National |
| Average Test Scores | 63% | 44% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 6 | 1,899 | 79,221 |
| Total private schools | 2 | 531 | 24,874 |
| Total post-secondary schools | 1 | 213 | 7,963 |
| Index | Sullivan | Missouri | National |
| Completed 8th grade | 73.4% | 86.0% | 84.3% |
| Completed high school | 71.0% | 84.2% | 83.0% |
| Completed some college | 42.1% | 57.7% | 59.4% |
| Completed associate degree | 20.6% | 35.2% | 38.5% |
| Completed bachelors | 12.1% | 27.6% | 30.3% |
| Completed masters | 4.0% | 10.4% | 11.5% |
| Completed professional degree | 0.7% | 2.8% | 3.3% |
| Completed doctorate | 0.2% | 1.2% | 1.3% |
There are a total of 6 public schools, 2 private schools and 1 post-secondary schools in Sullivan. Using the proficiency score averages, the average test scores for Sullivan, MO schools is 63%. The average student to teacher ratio is 15:1. In Sullivan, MO, an average of 73.4% of students have completed 8th grade and an average of 71.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Gerald, MO | 1,375 | 50% | 2.9% |
| Cuba, MO | 3,348 | 47% | 3.4% |
| Bourbon, MO | 1,700 | 44% | 9.3% |
| St. Clair, MO | 4,705 | 42% | 12.4% |
| Sullivan, MO | 6,838 | 63% | 31.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Jackson, WI | 6,839 | 62% | 28.8% |
| Maple Glen, PA | 6,837 | 81% | 68.3% |
| Byron Center, MI | 6,840 | 74% | 53.9% |
| Mountainside, NJ | 6,835 | 77% | 60.0% |
| Milford, OH | 6,833 | 78% | 61.3% |
| Sullivan, MO | 6,838 | 63% | 31.3% |
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