| Index | Plymouth | California | National |
| Average Test Scores | 49% | 43% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Plymouth | California | National |
| Completed 8th grade | 79.1% | 81.1% | 84.3% |
| Completed high school | 75.9% | 79.8% | 83.0% |
| Completed some college | 43.2% | 61.5% | 59.4% |
| Completed associate degree | 20.8% | 39.8% | 38.5% |
| Completed bachelors | 9.4% | 32.0% | 30.3% |
| Completed masters | 2.5% | 11.9% | 11.5% |
| Completed professional degree | 0.3% | 3.9% | 3.3% |
| Completed doctorate | 0.0% | 1.6% | 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, CA schools is 49%. The average student to teacher ratio is n/a. In Plymouth, CA, an average of 79.1% of students have completed 8th grade and an average of 75.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| El Dorado Hills, CA | 47,107 | 68% | 42.0% |
| Shingle Springs, CA | 3,710 | 68% | 41.5% |
| Cameron Park, CA | 18,370 | 59% | 23.7% |
| Mokelumne Hill, CA | 484 | 50% | 3.1% |
| Diamond Springs, CA | 11,332 | 41% | 14.8% |
| Plymouth, CA | 1,031 | 49% | 1.0% |
| City | Population | Avg. Test Scores | National Avg. |
| South Woodstock, CT | 1,031 | 54% | 12.5% |
| Harlowton, MT | 1,031 | 37% | 22.2% |
| Shipshewana, IN | 1,031 | 61% | 26.6% |
| Sherburn, MN | 1,032 | 57% | 19.3% |
| McConnellsburg, PA | 1,030 | 63% | 31.6% |
| Plymouth, CA | 1,031 | 49% | 1.0% |
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