| Index | Millbrook | Illinois | National |
| Average Test Scores | 52% | 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 | Millbrook | Illinois | National |
| Completed 8th grade | 92.5% | 86.2% | 84.3% |
| Completed high school | 91.7% | 84.7% | 83.0% |
| Completed some college | 64.4% | 61.8% | 59.4% |
| Completed associate degree | 31.6% | 40.7% | 38.5% |
| Completed bachelors | 17.4% | 32.9% | 30.3% |
| Completed masters | 3.6% | 12.7% | 11.5% |
| Completed professional degree | 0.0% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Millbrook. Using the proficiency score averages, the average test scores for Millbrook, IL schools is 52%. The average student to teacher ratio is n/a. In Millbrook, IL, an average of 92.5% of students have completed 8th grade and an average of 91.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Big Rock, IL | 1,271 | 55% | 13.5% |
| Newark, IL | 1,325 | 50% | 3.5% |
| Channahon, IL | 13,281 | 48% | 0.7% |
| Hinckley, IL | 2,190 | 46% | 4.2% |
| Yorkville, IL | 19,386 | 46% | 4.4% |
| Millbrook, IL | 357 | 52% | 8.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Willisburg, KY | 357 | 61% | 26.0% |
| Forest, LA | 357 | 62% | 28.1% |
| Shonto, AZ | 357 | 31% | 34.9% |
| City of Creede, CO | 357 | 35% | 27.1% |
| Maynard, MN | 357 | 60% | 24.0% |
| Millbrook, IL | 357 | 52% | 8.3% |
Here are the best places to live in Illinois
Most Dangerous Cities In The US
Check out the 10 most dangerous cities in Illinois
Check out the 10 safest cities in Illinois