| Index | Three Rivers | Texas | National |
| Average Test Scores | 42% | 47% | 48% |
| Student/Teacher ratio | 11:1 | 14:1 | 16:1 |
| Total public schools | 3 | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Three Rivers | Texas | National |
| Completed 8th grade | 76.6% | 79.3% | 84.3% |
| Completed high school | 72.4% | 77.8% | 83.0% |
| Completed some college | 34.3% | 57.3% | 59.4% |
| Completed associate degree | 11.9% | 34.9% | 38.5% |
| Completed bachelors | 8.0% | 28.1% | 30.3% |
| Completed masters | 1.3% | 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 3 public schools, n/a private schools and n/a post-secondary schools in Three Rivers. Using the proficiency score averages, the average test scores for Three Rivers, TX schools is 42%. The average student to teacher ratio is 11:1. In Three Rivers, TX, an average of 76.6% of students have completed 8th grade and an average of 72.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| George West, TX | 2,571 | 62% | 29.4% |
| Pawnee, TX | 85 | 47% | 2.1% |
| Three Rivers, TX | 2,067 | 42% | 12.5% |
| City | Population | Avg. Test Scores | National Avg. |
| El Portal, FL | 2,066 | 25% | 47.9% |
| Coalville, UT | 2,066 | 62% | 28.8% |
| Thoreau, NM | 2,068 | 17% | 64.9% |
| Hopkins, SC | 2,068 | 25% | 47.1% |
| Camino, CA | 2,065 | 53% | 10.4% |
| Three Rivers, TX | 2,067 | 42% | 12.5% |
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