| Index | Gretna | Virginia | National |
| Average Test Scores | 78% | 79% | 48% |
| Student/Teacher ratio | 12:1 | 13:1 | 16:1 |
| Total public schools | 4 | 1,596 | 79,221 |
| Total private schools | n/a | 553 | 24,874 |
| Total post-secondary schools | n/a | 199 | 7,963 |
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| Index | Gretna | Virginia | National |
| Completed 8th grade | 76.0% | 85.9% | 84.3% |
| Completed high school | 69.8% | 84.7% | 83.0% |
| Completed some college | 42.8% | 64.1% | 59.4% |
| Completed associate degree | 18.3% | 44.2% | 38.5% |
| Completed bachelors | 14.6% | 36.9% | 30.3% |
| Completed masters | 8.3% | 15.7% | 11.5% |
| Completed professional degree | 0.7% | 4.2% | 3.3% |
| Completed doctorate | 0.0% | 1.7% | 1.3% |
There are a total of 4 public schools, n/a private schools and n/a post-secondary schools in Gretna. Using the proficiency score averages, the average test scores for Gretna, VA schools is 78%. The average student to teacher ratio is 12:1. In Gretna, VA, an average of 76.0% of students have completed 8th grade and an average of 69.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hurt, VA | 1,511 | 94% | 94.8% |
| Chatham, VA | 1,803 | 86% | 79.4% |
| Altavista, VA | 3,531 | 79% | 65.1% |
| Gretna, VA | 1,473 | 78% | 61.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Basin, WY | 1,473 | 64% | 32.3% |
| Breckenridge, MI | 1,472 | 41% | 15.6% |
| Elkhart, TX | 1,472 | 53% | 9.4% |
| Tryon, NC | 1,472 | 65% | 34.4% |
| Caledonia, MI | 1,472 | 62% | 29.4% |
| Gretna, VA | 1,473 | 78% | 61.5% |
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