| Index | Union | Nebraska | National |
| Average Test Scores | n/a | 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 | Union | Nebraska | National |
| Completed 8th grade | 76.6% | 88.4% | 84.3% |
| Completed high school | 75.9% | 87.2% | 83.0% |
| Completed some college | 36.2% | 63.7% | 59.4% |
| Completed associate degree | 10.6% | 40.1% | 38.5% |
| Completed bachelors | 0.7% | 30.0% | 30.3% |
| Completed masters | 0.0% | 9.9% | 11.5% |
| Completed professional degree | 0.0% | 2.9% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Union. Using the proficiency score averages, the average test scores for Union, NE schools is n/a. The average student to teacher ratio is n/a. In Union, NE, an average of 76.6% of students have completed 8th grade and an average of 75.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Tabor, IA | 1,100 | 75% | 55.2% |
| Sidney, IA | 1,007 | 72% | 50.0% |
| Hamburg, IA | 1,300 | 70% | 45.8% |
| Syracuse, NE | 2,043 | 67% | 39.9% |
| Louisville, NE | 1,425 | 60% | 24.3% |
| Union, NE | 192 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Blackwell, TX | 192 | 55% | 13.5% |
| Autryville, NC | 192 | 72% | 50.0% |
| Loachapoka, AL | 192 | 23% | 51.6% |
| Marquand, MO | 193 | 33% | 32.3% |
| Russian Mission, AK | 193 | 5% | 89.6% |
| Union, NE | 192 | n/a |
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