| Index | Plymouth | New Hampshire | National |
| Average Test Scores | 56% | 52% | 48% |
| Student/Teacher ratio | 12:1 | 13:1 | 16:1 |
| Total public schools | 3 | 234 | 79,221 |
| Total private schools | 4 | 144 | 24,874 |
| Total post-secondary schools | 1 | 40 | 7,963 |
| Index | Plymouth | New Hampshire | National |
| Completed 8th grade | 96.0% | 89.5% | 84.3% |
| Completed high school | 96.0% | 88.4% | 83.0% |
| Completed some college | 73.5% | 64.2% | 59.4% |
| Completed associate degree | 56.6% | 45.3% | 38.5% |
| Completed bachelors | 52.0% | 35.5% | 30.3% |
| Completed masters | 33.8% | 13.4% | 11.5% |
| Completed professional degree | 8.0% | 3.3% | 3.3% |
| Completed doctorate | 5.0% | 1.4% | 1.3% |
There are a total of 3 public schools, 4 private schools and 1 post-secondary schools in Plymouth. Using the proficiency score averages, the average test scores for Plymouth, NH schools is 56%. The average student to teacher ratio is 12:1. In Plymouth, NH, an average of 96.0% of students have completed 8th grade and an average of 96.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| New Hampton, NH | 326 | 75% | 56.3% |
| Center Sandwich, NH | 98 | 70% | 45.8% |
| Meredith, NH | 2,651 | 57% | 18.1% |
| Bristol, NH | 1,970 | 51% | 5.7% |
| Ashland, NH | 1,630 | 50% | 3.1% |
| Plymouth, NH | 4,281 | 56% | 16.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Ashville, OH | 4,281 | 78% | 62.5% |
| Magnolia, NJ | 4,280 | 40% | 17.7% |
| Alvarado, TX | 4,282 | 46% | 5.0% |
| Millinocket, ME | 4,280 | 38% | 20.3% |
| Summerville, GA | 4,283 | 26% | 45.6% |
| Plymouth, NH | 4,281 | 56% | 16.0% |
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