| Index | Gretna | Nebraska | National |
| Average Test Scores | 70% | 53% | 48% |
| Student/Teacher ratio | 16:1 | 13:1 | 16:1 |
| Total public schools | 3 | 780 | 79,221 |
| Total private schools | n/a | 182 | 24,874 |
| Total post-secondary schools | n/a | 56 | 7,963 |
| Index | Gretna | Nebraska | National |
| Completed 8th grade | 92.8% | 88.4% | 84.3% |
| Completed high school | 92.0% | 87.2% | 83.0% |
| Completed some college | 71.7% | 63.7% | 59.4% |
| Completed associate degree | 48.4% | 40.1% | 38.5% |
| Completed bachelors | 38.4% | 30.0% | 30.3% |
| Completed masters | 13.1% | 9.9% | 11.5% |
| Completed professional degree | 2.8% | 2.9% | 3.3% |
| Completed doctorate | 0.8% | 1.2% | 1.3% |
There are a total of 3 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, NE schools is 70%. The average student to teacher ratio is 16:1. In Gretna, NE, an average of 92.8% of students have completed 8th grade and an average of 92.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Murdock, NE | 177 | 72% | 50.0% |
| Springfield, NE | 1,582 | 68% | 41.3% |
| Yutan, NE | 1,075 | 65% | 34.4% |
| Valley, NE | 2,834 | 62% | 28.1% |
| Papillion, NE | 24,310 | 61% | 28.0% |
| Gretna, NE | 5,039 | 70% | 45.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Mattawa, WA | 5,040 | 23% | 52.7% |
| Rainsville, AL | 5,038 | 45% | 7.3% |
| Crestwood, KY | 5,034 | 65% | 35.4% |
| Maize, KS | 5,044 | 49% | 1.9% |
| Sea Cliff, NY | 5,045 | 92% | 91.7% |
| Gretna, NE | 5,039 | 70% | 45.6% |
Here are the best places to live in Nebraska
See the best places to live in Gretna
Most Dangerous Cities In The US
Check out the 10 most dangerous cities in Nebraska