| 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% |
| Northfield, NJ | 8,088 | 53% | 10.9% |
| Bel Aire, KS | 8,082 | 40% | 17.2% |
| Ephrata, WA | 8,081 | 58% | 19.8% |
| Oak Brook, IL | 8,085 | 79% | 64.6% |
Here are the best places to live in Illinois
Check out the 10 most dangerous cities in Illinois
Most Dangerous Cities In The US
These are the 10 cheapest cities in Illinois