| Index | Sebastian | Texas | National |
| Average Test Scores | n/a | 47% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Sebastian | Texas | National |
| Completed 8th grade | 52.9% | 79.3% | 84.3% |
| Completed high school | 47.6% | 77.8% | 83.0% |
| Completed some college | 24.2% | 57.3% | 59.4% |
| Completed associate degree | 7.5% | 34.9% | 38.5% |
| Completed bachelors | 3.2% | 28.1% | 30.3% |
| Completed masters | 0.8% | 9.6% | 11.5% |
| Completed professional degree | 0.8% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Sebastian. Using the proficiency score averages, the average test scores for Sebastian, TX schools is n/a. The average student to teacher ratio is n/a. In Sebastian, TX, an average of 52.9% of students have completed 8th grade and an average of 47.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Combes, TX | 3,016 | 65% | 34.4% |
| Hargill, TX | 1,083 | 57% | 18.8% |
| San Perlita, TX | 739 | 52% | 7.6% |
| Harlingen, TX | 65,028 | 48% | 0.7% |
| Weslaco, TX | 41,103 | 46% | 4.0% |
| Sebastian, TX | 1,508 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Lee, MA | 1,508 | 50% | 3.1% |
| Paradis, LA | 1,508 | 84% | 74.0% |
| Dawson, MN | 1,507 | 61% | 26.6% |
| Del Norte, CO | 1,509 | 21% | 56.8% |
| Cascade Locks, OR | 1,509 | 45% | 6.3% |
| Sebastian, TX | 1,508 | n/a |
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