| Index | Plainwell | Michigan | National |
| Average Test Scores | 48% | 42% | 48% |
| Student/Teacher ratio | 19:1 | 22:1 | 16:1 |
| Total public schools | 6 | 3,421 | 79,221 |
| Total private schools | n/a | 835 | 24,874 |
| Total post-secondary schools | 1 | 196 | 7,963 |
| Index | Plainwell | Michigan | National |
| Completed 8th grade | 88.0% | 86.9% | 84.3% |
| Completed high school | 85.9% | 85.9% | 83.0% |
| Completed some college | 61.7% | 60.3% | 59.4% |
| Completed associate degree | 28.5% | 36.5% | 38.5% |
| Completed bachelors | 19.7% | 27.4% | 30.3% |
| Completed masters | 7.9% | 10.7% | 11.5% |
| Completed professional degree | 0.7% | 2.8% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 6 public schools, n/a private schools and 1 post-secondary schools in Plainwell. Using the proficiency score averages, the average test scores for Plainwell, MI schools is 48%. The average student to teacher ratio is 19:1. In Plainwell, MI, an average of 88.0% of students have completed 8th grade and an average of 85.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Otsego, MI | 3,980 | 60% | 25.0% |
| Richland, MI | 877 | 54% | 13.3% |
| Hopkins, MI | 843 | 53% | 10.8% |
| Martin, MI | 478 | 45% | 7.3% |
| Galesburg, MI | 2,201 | 42% | 12.5% |
| Plainwell, MI | 3,799 | 48% | 0.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Carter Lake, IA | 3,799 | 52% | 8.3% |
| Sewickley, PA | 3,800 | 81% | 67.7% |
| Hazlehurst, MS | 3,801 | 24% | 50.3% |
| Brookville, PA | 3,801 | 55% | 14.6% |
| Leonardtown, MD | 3,795 | 60% | 24.0% |
| Plainwell, MI | 3,799 | 48% | 0.2% |
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