| Index | Brooklyn | Illinois | National |
| Average Test Scores | 15% | 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 | Brooklyn | Illinois | National |
| Completed 8th grade | 77.4% | 86.2% | 84.3% |
| Completed high school | 76.8% | 84.7% | 83.0% |
| Completed some college | 46.6% | 61.8% | 59.4% |
| Completed associate degree | 23.9% | 40.7% | 38.5% |
| Completed bachelors | 12.4% | 32.9% | 30.3% |
| Completed masters | 1.8% | 12.7% | 11.5% |
| Completed professional degree | 0.5% | 3.4% | 3.3% |
| Completed doctorate | 0.5% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Brooklyn. Using the proficiency score averages, the average test scores for Brooklyn, IL schools is 15%. The average student to teacher ratio is n/a. In Brooklyn, IL, an average of 77.4% of students have completed 8th grade and an average of 76.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clayton, MO | 16,763 | 73% | 52.7% |
| Brentwood, MO | 7,986 | 70% | 45.6% |
| Olivette, MO | 7,837 | 70% | 44.8% |
| Kirkwood, MO | 27,772 | 69% | 43.1% |
| Maryville, IL | 7,962 | 65% | 34.4% |
| Brooklyn, IL | 428 | 15% | 68.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Cornell, IL | 428 | 17% | 64.6% |
| Sanostee, NM | 428 | 50% | 4.2% |
| Linn, KS | 428 | 46% | 4.2% |
| Robbins, CA | 428 | 57% | 18.8% |
| Florence, WI | 428 | 39% | 19.1% |
| Brooklyn, IL | 428 | 15% | 68.8% |
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