| Index | Rio Hondo | Texas | National |
| Average Test Scores | 39% | 47% | 48% |
| Student/Teacher ratio | 16:1 | 14:1 | 16:1 |
| Total public schools | 5 | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Rio Hondo | Texas | National |
| Completed 8th grade | 69.5% | 79.3% | 84.3% |
| Completed high school | 64.1% | 77.8% | 83.0% |
| Completed some college | 40.4% | 57.3% | 59.4% |
| Completed associate degree | 20.0% | 34.9% | 38.5% |
| Completed bachelors | 12.7% | 28.1% | 30.3% |
| Completed masters | 6.6% | 9.6% | 11.5% |
| Completed professional degree | 1.3% | 2.6% | 3.3% |
| Completed doctorate | 0.4% | 1.1% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Rio Hondo. Using the proficiency score averages, the average test scores for Rio Hondo, TX schools is 39%. The average student to teacher ratio is 16:1. In Rio Hondo, TX, an average of 69.5% of students have completed 8th grade and an average of 64.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Combes, TX | 3,016 | 65% | 34.4% |
| Olmito, TX | 1,255 | 63% | 30.2% |
| Los Fresnos, TX | 7,767 | 57% | 17.9% |
| Harlingen, TX | 65,028 | 48% | 0.7% |
| Lyford, TX | 2,536 | 43% | 9.7% |
| Rio Hondo, TX | 2,644 | 39% | 19.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Eutaw, AL | 2,643 | 24% | 51.0% |
| Chewelah, WA | 2,645 | 46% | 3.5% |
| Phoenix, NY | 2,643 | 60% | 24.0% |
| West Portsmouth, OH | 2,646 | 61% | 27.4% |
| Williamson, NY | 2,642 | 62% | 28.5% |
| Rio Hondo, TX | 2,644 | 39% | 19.8% |
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