| Index | Winnetka | Illinois | National |
| Average Test Scores | 73% | 33% | 48% |
| Student/Teacher ratio | 14:1 | 18:1 | 16:1 |
| Total public schools | 6 | 3,938 | 79,221 |
| Total private schools | 3 | 1,438 | 24,874 |
| Total post-secondary schools | 2 | 306 | 7,963 |
| Index | Winnetka | Illinois | National |
| Completed 8th grade | 98.3% | 86.2% | 84.3% |
| Completed high school | 98.2% | 84.7% | 83.0% |
| Completed some college | 94.7% | 61.8% | 59.4% |
| Completed associate degree | 89.5% | 40.7% | 38.5% |
| Completed bachelors | 88.1% | 32.9% | 30.3% |
| Completed masters | 46.9% | 12.7% | 11.5% |
| Completed professional degree | 17.0% | 3.4% | 3.3% |
| Completed doctorate | 4.1% | 1.2% | 1.3% |
There are a total of 6 public schools, 3 private schools and 2 post-secondary schools in Winnetka. Using the proficiency score averages, the average test scores for Winnetka, IL schools is 73%. The average student to teacher ratio is 14:1. In Winnetka, IL, an average of 98.3% of students have completed 8th grade and an average of 98.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Lincolnshire, IL | 7,694 | 78% | 62.8% |
| Bannockburn, IL | 1,194 | 77% | 60.4% |
| Deerfield, IL | 19,030 | 77% | 59.4% |
| Kenilworth, IL | 2,356 | 74% | 53.1% |
| Northfield, IL | 5,678 | 74% | 53.1% |
| Winnetka, IL | 12,361 | 73% | 52.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Urbana, MD | 12,362 | 79% | 64.6% |
| Larkspur, CA | 12,363 | 53% | 9.4% |
| Fairfax Station, VA | 12,364 | 82% | 71.5% |
| Centralia, IL | 12,354 | 24% | 49.3% |
| Marion, AR | 12,371 | 32% | 32.8% |
| Winnetka, IL | 12,361 | 73% | 52.3% |
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