| Index | Port Isabel | Texas | National |
| Average Test Scores | 39% | 47% | 48% |
| Student/Teacher ratio | 16:1 | 14:1 | 16:1 |
| Total public schools | 4 | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Port Isabel | Texas | National |
| Completed 8th grade | 65.5% | 79.3% | 84.3% |
| Completed high school | 62.8% | 77.8% | 83.0% |
| Completed some college | 35.8% | 57.3% | 59.4% |
| Completed associate degree | 20.7% | 34.9% | 38.5% |
| Completed bachelors | 15.6% | 28.1% | 30.3% |
| Completed masters | 5.6% | 9.6% | 11.5% |
| Completed professional degree | 2.6% | 2.6% | 3.3% |
| Completed doctorate | 1.5% | 1.1% | 1.3% |
There are a total of 4 public schools, n/a private schools and n/a post-secondary schools in Port Isabel. Using the proficiency score averages, the average test scores for Port Isabel, TX schools is 39%. The average student to teacher ratio is 16:1. In Port Isabel, TX, an average of 65.5% of students have completed 8th grade and an average of 62.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Port Isabel, TX | 6,278 | 39% | 18.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Walker, LA | 6,278 | 77% | 61.2% |
| Carmel Hamlet, NY | 6,278 | 99% | 105.2% |
| Bellefonte, PA | 6,276 | 62% | 28.1% |
| Seneca Falls, NY | 6,276 | 53% | 10.4% |
| Kermit, TX | 6,283 | 20% | 58.3% |
| Port Isabel, TX | 6,278 | 39% | 18.2% |
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