| Index | Plymouth | Ohio | National |
| Average Test Scores | 64% | 61% | 48% |
| Student/Teacher ratio | 15:1 | 17:1 | 16:1 |
| Total public schools | 2 | 3,650 | 79,221 |
| Total private schools | n/a | 1,000 | 24,874 |
| Total post-secondary schools | n/a | 393 | 7,963 |
| Index | Plymouth | Ohio | National |
| Completed 8th grade | 83.5% | 86.9% | 84.3% |
| Completed high school | 81.8% | 85.6% | 83.0% |
| Completed some college | 44.1% | 55.7% | 59.4% |
| Completed associate degree | 22.5% | 35.1% | 38.5% |
| Completed bachelors | 14.5% | 26.7% | 30.3% |
| Completed masters | 5.4% | 10.0% | 11.5% |
| Completed professional degree | 0.0% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 2 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, OH schools is 64%. The average student to teacher ratio is 15:1. In Plymouth, OH, an average of 83.5% of students have completed 8th grade and an average of 81.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| New Washington, OH | 1,000 | 79% | 64.2% |
| Attica, OH | 840 | 73% | 51.0% |
| Shelby, OH | 8,282 | 70% | 45.6% |
| Greenwich, OH | 1,489 | 66% | 36.5% |
| New London, OH | 2,476 | 65% | 34.4% |
| Plymouth, OH | 1,607 | 64% | 33.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Northville, NY | 1,607 | 47% | 2.1% |
| Gallitzin, PA | 1,608 | 54% | 12.5% |
| Lockney, TX | 1,608 | 30% | 37.5% |
| Anna, OH | 1,608 | 83% | 72.6% |
| Mapleton, MN | 1,606 | 59% | 21.9% |
| Plymouth, OH | 1,607 | 64% | 33.0% |
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