| Index | Sullivan City | Texas | National |
| Average Test Scores | 45% | 47% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 1 | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Sullivan City | Texas | National |
| Completed 8th grade | 46.6% | 79.3% | 84.3% |
| Completed high school | 42.0% | 77.8% | 83.0% |
| Completed some college | 22.8% | 57.3% | 59.4% |
| Completed associate degree | 8.9% | 34.9% | 38.5% |
| Completed bachelors | 8.0% | 28.1% | 30.3% |
| Completed masters | 2.1% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Sullivan City. Using the proficiency score averages, the average test scores for Sullivan City, TX schools is 45%. The average student to teacher ratio is 15:1. In Sullivan City, TX, an average of 46.6% of students have completed 8th grade and an average of 42.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| La Joya, TX | 4,374 | 62% | 29.8% |
| Mission, TX | 83,796 | 51% | 6.8% |
| Palmview, TX | 17,410 | 50% | 4.2% |
| Penitas, TX | 6,103 | 45% | 5.5% |
| Garciasville, TX | 0 | 40% | 17.7% |
| Sullivan City, TX | 4,187 | 45% | 7.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Comanche, TX | 4,187 | 42% | 12.8% |
| Waverly, OH | 4,186 | 49% | 1.7% |
| Alexandria, AL | 4,185 | 48% | 0.3% |
| Greenfield, OH | 4,184 | 61% | 26.0% |
| Oakwood, GA | 4,191 | 35% | 28.1% |
| Sullivan City, TX | 4,187 | 45% | 7.3% |
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