| Index | Plainville | Indiana | National |
| Average Test Scores | n/a | 46% | 48% |
| Student/Teacher ratio | n/a | 22:1 | 16:1 |
| Total public schools | n/a | 1,755 | 79,221 |
| Total private schools | n/a | 675 | 24,874 |
| Total post-secondary schools | n/a | 141 | 7,963 |
| Index | Plainville | Indiana | National |
| Completed 8th grade | 76.7% | 84.6% | 84.3% |
| Completed high school | 73.7% | 82.9% | 83.0% |
| Completed some college | 36.3% | 53.8% | 59.4% |
| Completed associate degree | 15.9% | 33.0% | 38.5% |
| Completed bachelors | 6.6% | 24.6% | 30.3% |
| Completed masters | 5.3% | 8.9% | 11.5% |
| Completed professional degree | 0.8% | 2.4% | 3.3% |
| Completed doctorate | 0.0% | 1.0% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Plainville. Using the proficiency score averages, the average test scores for Plainville, IN schools is n/a. The average student to teacher ratio is n/a. In Plainville, IN, an average of 76.7% of students have completed 8th grade and an average of 73.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Montgomery, IN | 1,025 | 76% | 58.3% |
| Loogootee, IN | 2,579 | 55% | 13.5% |
| Elnora, IN | 519 | 53% | 9.4% |
| Lyons, IN | 880 | 50% | 4.2% |
| Bruceville, IN | 400 | 47% | 3.1% |
| Plainville, IN | 275 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Huslia, AK | 275 | 20% | 58.3% |
| Echo, MN | 275 | 40% | 16.7% |
| Lincoln, MI | 275 | 36% | 26.0% |
| Beclabito, NM | 275 | 50% | 4.2% |
| Chapman, NE | 275 | 45% | 6.3% |
| Plainville, IN | 275 | n/a |
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