| Index | Plain | Wisconsin | National |
| Average Test Scores | n/a | 41% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,869 | 79,221 |
| Total private schools | n/a | 872 | 24,874 |
| Total post-secondary schools | n/a | 114 | 7,963 |
| Index | Plain | Wisconsin | National |
| Completed 8th grade | 95.7% | 89.0% | 84.3% |
| Completed high school | 92.9% | 87.8% | 83.0% |
| Completed some college | 55.0% | 59.7% | 59.4% |
| Completed associate degree | 31.7% | 38.7% | 38.5% |
| Completed bachelors | 19.7% | 28.4% | 30.3% |
| Completed masters | 3.2% | 9.6% | 11.5% |
| Completed professional degree | 0.6% | 2.7% | 3.3% |
| Completed doctorate | 0.6% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Plain. Using the proficiency score averages, the average test scores for Plain, WI schools is n/a. The average student to teacher ratio is n/a. In Plain, WI, an average of 95.7% of students have completed 8th grade and an average of 92.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Loganville, WI | 256 | 70% | 45.8% |
| North Freedom, WI | 648 | 52% | 8.3% |
| Mazomanie, WI | 1,709 | 47% | 1.7% |
| Spring Green, WI | 1,633 | 41% | 13.9% |
| Plain, WI | 681 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Junction City, AR | 681 | 28% | 41.7% |
| Lizton, IN | 681 | 68% | 41.7% |
| LaMoure, ND | 681 | 40% | 17.0% |
| Mangham, LA | 681 | 67% | 39.6% |
| Milnor, ND | 681 | 49% | 1.6% |
| Plain, WI | 681 | n/a |
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