| Index | Winfield | Illinois | National |
| Average Test Scores | 54% | 33% | 48% |
| Student/Teacher ratio | 16:1 | 18:1 | 16:1 |
| Total public schools | 3 | 3,938 | 79,221 |
| Total private schools | 1 | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Winfield | Illinois | National |
| Completed 8th grade | 96.8% | 86.2% | 84.3% |
| Completed high school | 96.5% | 84.7% | 83.0% |
| Completed some college | 81.8% | 61.8% | 59.4% |
| Completed associate degree | 62.3% | 40.7% | 38.5% |
| Completed bachelors | 53.2% | 32.9% | 30.3% |
| Completed masters | 19.9% | 12.7% | 11.5% |
| Completed professional degree | 3.9% | 3.4% | 3.3% |
| Completed doctorate | 1.6% | 1.2% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Winfield. Using the proficiency score averages, the average test scores for Winfield, IL schools is 54%. The average student to teacher ratio is 16:1. In Winfield, IL, an average of 96.8% of students have completed 8th grade and an average of 96.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Oak Brook, IL | 8,085 | 79% | 64.6% |
| Clarendon Hills, IL | 8,834 | 77% | 59.4% |
| Hinsdale, IL | 17,366 | 74% | 54.7% |
| Western Springs, IL | 13,247 | 74% | 54.4% |
| South Barrington, IL | 4,963 | 69% | 42.7% |
| Winfield, IL | 9,683 | 54% | 12.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Kensington, CT | 9,685 | 62% | 29.9% |
| Oakville, CT | 9,679 | 59% | 22.4% |
| Little River, SC | 9,692 | 60% | 25.3% |
| Croydon, PA | 9,693 | 50% | 3.1% |
| Hamburg, NY | 9,672 | 65% | 35.8% |
| Winfield, IL | 9,683 | 54% | 12.0% |
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