| Index | Plymouth | 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 | Plymouth | Nebraska | National |
| Completed 8th grade | 87.3% | 88.4% | 84.3% |
| Completed high school | 85.6% | 87.2% | 83.0% |
| Completed some college | 52.8% | 63.7% | 59.4% |
| Completed associate degree | 28.8% | 40.1% | 38.5% |
| Completed bachelors | 12.0% | 30.0% | 30.3% |
| Completed masters | 1.7% | 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 Plymouth. Using the proficiency score averages, the average test scores for Plymouth, NE schools is n/a. The average student to teacher ratio is n/a. In Plymouth, NE, an average of 87.3% of students have completed 8th grade and an average of 85.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Diller, NE | 283 | 72% | 50.0% |
| Beatrice, NE | 12,664 | 50% | 3.1% |
| Wilber, NE | 2,129 | 43% | 9.9% |
| Fairbury, NE | 3,802 | 43% | 10.9% |
| Plymouth, NE | 434 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Bennett, IA | 434 | 60% | 25.0% |
| North Salem, IN | 434 | 82% | 70.8% |
| Swan Quarter, NC | 433 | 31% | 35.9% |
| Frazer, MT | 435 | 32% | 34.0% |
| Blanca, CO | 435 | 25% | 49.0% |
| Plymouth, NE | 434 | n/a |