| 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 | 8,641 | 77% | 59.0% |
| Hinsdale, IL | 17,438 | 74% | 54.3% |
| Western Springs, IL | 13,133 | 74% | 54.0% |
| River Forest, IL | 11,217 | 67% | 38.2% |
| Riverside, IL | 8,779 | 65% | 34.9% |
| Oak Brook, IL | 7,988 | 79% | 64.2% |
| City | Population | Avg. Test Scores | National Avg. |
| York, SC | 7,989 | 47% | 1.6% |
| Round Lake Park, IL | 7,989 | 15% | 69.9% |
| Charlestown, IN | 7,990 | 46% | 5.1% |
| Ilion, NY | 7,986 | 73% | 50.7% |
| Decorah, IA | 7,985 | 81% | 68.1% |
| Oak Brook, IL | 7,988 | 79% | 64.2% |
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