| 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 |
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| 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 | 69,234 | 58% | 20.7% |
| Center Ridge, AR | 560 | 55% | 13.5% |
| Vilonia, AR | 4,692 | 54% | 11.5% |
| Enola, AR | 404 | 52% | 8.3% |
| Mount Vernon, AR | 185 | 50% | 3.1% |
| Greenbrier, AR | 5,797 | 72% | 50.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Media, PA | 5,798 | 78% | 61.6% |
| Houghton Lake, MI | 5,798 | 33% | 30.9% |
| Ballston Spa, NY | 5,796 | 65% | 34.4% |
| Wake Village, TX | 5,795 | 47% | 3.1% |
| Clarion, PA | 5,801 | 55% | 14.6% |
| Greenbrier, AR | 5,797 | 72% | 50.7% |
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