| Index | Greenbrier | Arkansas | National |
| Average Test Scores | 72% | 45% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 5 | 860 | 79,221 |
| Total private schools | n/a | 165 | 24,874 |
| Total post-secondary schools | n/a | 98 | 7,963 |
| Index | Greenbrier | Arkansas | National |
| Completed 8th grade | 82.2% | 80.7% | 84.3% |
| Completed high school | 82.2% | 79.0% | 83.0% |
| Completed some college | 58.7% | 50.5% | 59.4% |
| Completed associate degree | 26.5% | 27.9% | 38.5% |
| Completed bachelors | 18.7% | 21.5% | 30.3% |
| Completed masters | 5.9% | 7.6% | 11.5% |
| Completed professional degree | 0.0% | 2.2% | 3.3% |
| Completed doctorate | 0.0% | 0.9% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Greenbrier. Using the proficiency score averages, the average test scores for Greenbrier, AR schools is 72%. The average student to teacher ratio is 15:1. In Greenbrier, AR, an average of 82.2% of students have completed 8th grade and an average of 82.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Conway, AR | 66,776 | 58% | 20.7% |
| Center Ridge, AR | 541 | 55% | 13.5% |
| Vilonia, AR | 4,556 | 54% | 11.5% |
| Enola, AR | 389 | 52% | 8.3% |
| Mount Vernon, AR | 178 | 50% | 3.1% |
| Greenbrier, AR | 5,592 | 72% | 50.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Woodside, CA | 5,593 | 71% | 47.6% |
| Berryville, AR | 5,594 | 42% | 12.5% |
| Edgerton, WI | 5,594 | 44% | 8.3% |
| Milton, WI | 5,594 | 50% | 4.2% |
| Cheraw, SC | 5,596 | 36% | 25.0% |
| Greenbrier, AR | 5,592 | 72% | 50.7% |
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