| 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 | 273 | 72% | 50.0% |
| Beatrice, NE | 12,282 | 50% | 3.1% |
| Wilber, NE | 2,086 | 43% | 9.9% |
| Fairbury, NE | 3,657 | 43% | 10.9% |
| Plymouth, NE | 424 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| DeRuyter, NY | 424 | 45% | 7.3% |
| Firth, NE | 424 | 65% | 35.1% |
| Strasburg, ND | 424 | 75% | 56.3% |
| Lancaster, MN | 425 | 65% | 35.4% |
| Hector, AR | 425 | 41% | 15.1% |
| Plymouth, NE | 424 | n/a |
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