| Index | Oak Brook | Illinois | National |
| Average Test Scores | 79% | 33% | 48% |
| Student/Teacher ratio | 10:1 | 18:1 | 16:1 |
| Total public schools | 2 | 3,938 | 79,221 |
| Total private schools | 3 | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Oak Brook | Illinois | National |
| Completed 8th grade | 96.0% | 86.2% | 84.3% |
| Completed high school | 95.8% | 84.7% | 83.0% |
| Completed some college | 80.7% | 61.8% | 59.4% |
| Completed associate degree | 66.5% | 40.7% | 38.5% |
| Completed bachelors | 62.9% | 32.9% | 30.3% |
| Completed masters | 35.2% | 12.7% | 11.5% |
| Completed professional degree | 21.7% | 3.4% | 3.3% |
| Completed doctorate | 4.4% | 1.2% | 1.3% |
There are a total of 2 public schools, 3 private schools and n/a post-secondary schools in Oak Brook. Using the proficiency score averages, the average test scores for Oak Brook, IL schools is 79%. The average student to teacher ratio is 10:1. In Oak Brook, IL, an average of 96.0% of students have completed 8th grade and an average of 95.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clarendon Hills, IL | 8,834 | 77% | 59.4% |
| Hinsdale, IL | 17,366 | 74% | 54.7% |
| Western Springs, IL | 13,247 | 74% | 54.4% |
| River Forest, IL | 10,883 | 67% | 38.5% |
| Riverside, IL | 8,748 | 65% | 35.2% |
| Oak Brook, IL | 8,085 | 79% | 64.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Ellsworth, ME | 8,085 | 48% | 1.0% |
| Garden City Park, NY | 8,087 | 73% | 52.1% |
| Bel Aire, KS | 8,082 | 40% | 17.2% |
| Northfield, NJ | 8,088 | 53% | 10.9% |
| Ephrata, WA | 8,081 | 58% | 19.8% |
| Oak Brook, IL | 8,085 | 79% | 64.6% |
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