| Index | Plainville | Kansas | National |
| Average Test Scores | 32% | 35% | 48% |
| Student/Teacher ratio | 13:1 | 14:1 | 16:1 |
| Total public schools | 2 | 970 | 79,221 |
| Total private schools | 1 | 190 | 24,874 |
| Total post-secondary schools | n/a | 86 | 7,963 |
| Index | Plainville | Kansas | National |
| Completed 8th grade | 89.7% | 87.4% | 84.3% |
| Completed high school | 88.2% | 86.1% | 83.0% |
| Completed some college | 56.0% | 63.7% | 59.4% |
| Completed associate degree | 31.7% | 39.8% | 38.5% |
| Completed bachelors | 21.3% | 31.6% | 30.3% |
| Completed masters | 8.9% | 11.4% | 11.5% |
| Completed professional degree | 0.0% | 3.0% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 2 public schools, 1 private schools and n/a post-secondary schools in Plainville. Using the proficiency score averages, the average test scores for Plainville, KS schools is 32%. The average student to teacher ratio is 13:1. In Plainville, KS, an average of 89.7% of students have completed 8th grade and an average of 88.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Natoma, KS | 431 | 30% | 37.5% |
| Palco, KS | 128 | 30% | 37.5% |
| Stockton, KS | 1,659 | 16% | 66.7% |
| Plainville, KS | 1,673 | 32% | 33.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Holliday, TX | 1,673 | 68% | 40.6% |
| Evart, MI | 1,673 | 32% | 32.7% |
| Mercersburg, PA | 1,673 | 62% | 29.0% |
| Chepachet, RI | 1,673 | 57% | 18.8% |
| Waterville, NY | 1,672 | 62% | 29.2% |
| Plainville, KS | 1,673 | 32% | 33.3% |
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