| Index | Willowbrook CDP | Illinois | National |
| Average Test Scores | n/a | 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 | Willowbrook CDP | Illinois | National |
| Completed 8th grade | 90.9% | 86.2% | 84.3% |
| Completed high school | 90.9% | 84.7% | 83.0% |
| Completed some college | 72.9% | 61.8% | 59.4% |
| Completed associate degree | 50.6% | 40.7% | 38.5% |
| Completed bachelors | 37.9% | 32.9% | 30.3% |
| Completed masters | 9.9% | 12.7% | 11.5% |
| Completed professional degree | 2.3% | 3.4% | 3.3% |
| Completed doctorate | 0.7% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Willowbrook CDP. Using the proficiency score averages, the average test scores for Willowbrook CDP, IL schools is n/a. The average student to teacher ratio is n/a. In Willowbrook CDP, IL, an average of 90.9% of students have completed 8th grade and an average of 90.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Oak Brook, IL | 8,377 | 79% | 64.6% |
| Clarendon Hills, IL | 9,104 | 77% | 59.4% |
| Hinsdale, IL | 17,817 | 74% | 54.7% |
| Western Springs, IL | 13,775 | 74% | 54.4% |
| River Forest, IL | 11,215 | 67% | 38.5% |
| Willowbrook CDP, IL | 2,044 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Santa Nella, CA | 2,044 | 27% | 43.8% |
| Hickman, KY | 2,045 | 32% | 33.0% |
| Dexter, ME | 2,045 | 29% | 40.6% |
| Crow Agency, MT | 2,045 | 5% | 89.6% |
| Morris, AL | 2,045 | 31% | 35.9% |
| Willowbrook CDP, IL | 2,044 | n/a |
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