| Index | Windsor | Illinois | National |
| Average Test Scores | 23% | 33% | 48% |
| Student/Teacher ratio | n/a | 18:1 | 16:1 |
| Total public schools | n/a | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Windsor | Illinois | National |
| Completed 8th grade | 84.2% | 86.2% | 84.3% |
| Completed high school | 82.8% | 84.7% | 83.0% |
| Completed some college | 51.5% | 61.8% | 59.4% |
| Completed associate degree | 20.9% | 40.7% | 38.5% |
| Completed bachelors | 8.4% | 32.9% | 30.3% |
| Completed masters | 2.0% | 12.7% | 11.5% |
| Completed professional degree | 0.0% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Windsor. Using the proficiency score averages, the average test scores for Windsor, IL schools is 23%. The average student to teacher ratio is n/a. In Windsor, IL, an average of 84.2% of students have completed 8th grade and an average of 82.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Shelbyville, IL | 4,198 | 44% | 8.3% |
| Strasburg, IL | 528 | 37% | 22.4% |
| Mattoon, IL | 17,273 | 30% | 37.2% |
| Sullivan, IL | 4,450 | 29% | 39.2% |
| Neoga, IL | 1,579 | 26% | 46.4% |
| Windsor, IL | 1,150 | 23% | 51.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Groveton, TX | 1,150 | 47% | 2.1% |
| Mound City, MO | 1,150 | 62% | 28.1% |
| Ninnekah, OK | 1,150 | 32% | 33.0% |
| Botkins, OH | 1,151 | 84% | 75.5% |
| Clarence, IA | 1,151 | 70% | 44.8% |
| Windsor, IL | 1,150 | 23% | 51.6% |
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