| Index | Garrison | Texas | National |
| Average Test Scores | 48% | 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 | Garrison | Texas | National |
| Completed 8th grade | 77.3% | 79.3% | 84.3% |
| Completed high school | 76.5% | 77.8% | 83.0% |
| Completed some college | 43.9% | 57.3% | 59.4% |
| Completed associate degree | 15.0% | 34.9% | 38.5% |
| Completed bachelors | 9.9% | 28.1% | 30.3% |
| Completed masters | 0.8% | 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 n/a public schools, n/a private schools and n/a post-secondary schools in Garrison. Using the proficiency score averages, the average test scores for Garrison, TX schools is 48%. The average student to teacher ratio is n/a. In Garrison, TX, an average of 77.3% of students have completed 8th grade and an average of 76.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Gary City, TX | 380 | 51% | 5.2% |
| Mount Enterprise, TX | 308 | 43% | 9.9% |
| Timpson, TX | 1,207 | 43% | 10.4% |
| Nacogdoches, TX | 32,912 | 41% | 14.4% |
| Tenaha, TX | 1,595 | 41% | 14.6% |
| Garrison, TX | 1,319 | 48% | 1.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Sherburne, NY | 1,319 | 48% | 0.7% |
| Red Lake Falls, MN | 1,319 | 58% | 21.4% |
| Millbury, OH | 1,319 | 66% | 36.5% |
| Woodville, MS | 1,319 | 17% | 64.6% |
| Bayard, NE | 1,319 | 35% | 28.1% |
| Garrison, TX | 1,319 | 48% | 1.0% |
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