| Index | Sumner | Nebraska | National |
| Average Test Scores | 50% | 53% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 780 | 79,221 |
| Total private schools | n/a | 182 | 24,874 |
| Total post-secondary schools | n/a | 56 | 7,963 |
| Index | Sumner | Nebraska | National |
| Completed 8th grade | 89.3% | 88.4% | 84.3% |
| Completed high school | 84.9% | 87.2% | 83.0% |
| Completed some college | 54.1% | 63.7% | 59.4% |
| Completed associate degree | 25.8% | 40.1% | 38.5% |
| Completed bachelors | 15.1% | 30.0% | 30.3% |
| Completed masters | 3.8% | 9.9% | 11.5% |
| Completed professional degree | 0.6% | 2.9% | 3.3% |
| Completed doctorate | 0.6% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Sumner. Using the proficiency score averages, the average test scores for Sumner, NE schools is 50%. The average student to teacher ratio is n/a. In Sumner, NE, an average of 89.3% of students have completed 8th grade and an average of 84.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Amherst, NE | 172 | 63% | 31.8% |
| Overton, NE | 702 | 46% | 4.7% |
| Lexington, NE | 10,069 | 38% | 21.3% |
| Sumner, NE | 306 | 50% | 4.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Nerstrand, MN | 306 | 55% | 13.5% |
| Northport, WA | 306 | 52% | 7.3% |
| Litchfield, NE | 306 | 45% | 6.3% |
| Bradford, NH | 306 | 62% | 29.2% |
| Singer, LA | 306 | 70% | 44.8% |
| Sumner, NE | 306 | 50% | 4.2% |
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