| Index | Sweeny | Texas | National |
| Average Test Scores | 44% | 47% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 4 | 7,418 | 79,221 |
| Total private schools | 1 | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Sweeny | Texas | National |
| Completed 8th grade | 85.8% | 79.3% | 84.3% |
| Completed high school | 85.2% | 77.8% | 83.0% |
| Completed some college | 48.3% | 57.3% | 59.4% |
| Completed associate degree | 21.1% | 34.9% | 38.5% |
| Completed bachelors | 11.9% | 28.1% | 30.3% |
| Completed masters | 3.5% | 9.6% | 11.5% |
| Completed professional degree | 0.3% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 4 public schools, 1 private schools and n/a post-secondary schools in Sweeny. Using the proficiency score averages, the average test scores for Sweeny, TX schools is 44%. The average student to teacher ratio is 15:1. In Sweeny, TX, an average of 85.8% of students have completed 8th grade and an average of 85.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Lake Jackson, TX | 27,269 | 51% | 6.0% |
| Van Vleck, TX | 1,293 | 49% | 2.6% |
| Boling, TX | 1,104 | 43% | 11.5% |
| Jones Creek, TX | 1,986 | 40% | 17.7% |
| West Columbia, TX | 3,871 | 35% | 26.6% |
| Sweeny, TX | 3,666 | 44% | 9.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Inman, SC | 3,665 | 57% | 19.2% |
| Milan, NM | 3,665 | 32% | 34.4% |
| Ballinger, TX | 3,665 | 40% | 17.4% |
| Northfield, OH | 3,667 | 84% | 74.7% |
| Newport, MN | 3,664 | 60% | 24.0% |
| Sweeny, TX | 3,666 | 44% | 9.4% |
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