| Index | Greenbackville | Virginia | National |
| Average Test Scores | n/a | 79% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,596 | 79,221 |
| Total private schools | n/a | 553 | 24,874 |
| Total post-secondary schools | n/a | 199 | 7,963 |
| Index | Greenbackville | Virginia | National |
| Completed 8th grade | 100.0% | 85.9% | 84.3% |
| Completed high school | 100.0% | 84.7% | 83.0% |
| Completed some college | 100.0% | 64.1% | 59.4% |
| Completed associate degree | 100.0% | 44.2% | 38.5% |
| Completed bachelors | 100.0% | 36.9% | 30.3% |
| Completed masters | 53.0% | 15.7% | 11.5% |
| Completed professional degree | 0.0% | 4.2% | 3.3% |
| Completed doctorate | 0.0% | 1.7% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Greenbackville. Using the proficiency score averages, the average test scores for Greenbackville, VA schools is n/a. The average student to teacher ratio is n/a. In Greenbackville, VA, an average of 100.0% of students have completed 8th grade and an average of 100.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Chincoteague, VA | 2,885 | 87% | 81.3% |
| Oak Hall, VA | 70 | 78% | 62.0% |
| Mappsville, VA | 536 | 69% | 42.7% |
| Pocomoke City, MD | 4,072 | 59% | 23.6% |
| Snow Hill, MD | 2,206 | 46% | 4.2% |
| Greenbackville, VA | 35 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Chignik Lagoon, AK | 35 | 50% | 4.2% |
| Deputy, IN | 34 | 65% | 35.4% |
| Amado, AZ | 34 | 22% | 54.2% |
| Cotopaxi, CO | 34 | 40% | 17.2% |
| Baker, NV | 36 | 50% | 4.2% |
| Greenbackville, VA | 35 | n/a |
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