| Index | Granbury | Texas | National |
| Average Test Scores | 41% | 47% | 48% |
| Student/Teacher ratio | 14:1 | 14:1 | 16:1 |
| Total public schools | 13 | 7,418 | 79,221 |
| Total private schools | 3 | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Granbury | Texas | National |
| Completed 8th grade | 83.4% | 79.3% | 84.3% |
| Completed high school | 83.0% | 77.8% | 83.0% |
| Completed some college | 57.9% | 57.3% | 59.4% |
| Completed associate degree | 31.9% | 34.9% | 38.5% |
| Completed bachelors | 27.4% | 28.1% | 30.3% |
| Completed masters | 8.6% | 9.6% | 11.5% |
| Completed professional degree | 2.7% | 2.6% | 3.3% |
| Completed doctorate | 1.6% | 1.1% | 1.3% |
There are a total of 13 public schools, 3 private schools and n/a post-secondary schools in Granbury. Using the proficiency score averages, the average test scores for Granbury, TX schools is 41%. The average student to teacher ratio is 14:1. In Granbury, TX, an average of 83.4% of students have completed 8th grade and an average of 83.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Tolar, TX | 1,201 | 65% | 34.4% |
| Glen Rose, TX | 2,653 | 59% | 21.9% |
| Lipan, TX | 488 | 50% | 3.1% |
| Granbury, TX | 10,325 | 41% | 15.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Fairfield, IA | 10,327 | 68% | 41.0% |
| Sauk Village, IL | 10,319 | 6% | 88.0% |
| Hillsdale, NJ | 10,317 | 71% | 46.9% |
| Lyons, IL | 10,338 | 25% | 49.0% |
| Greencastle, IN | 10,312 | 47% | 2.1% |
| Granbury, TX | 10,325 | 41% | 15.2% |
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