| Index | Brussels | Illinois | National |
| Average Test Scores | 35% | 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 | Brussels | Illinois | National |
| Completed 8th grade | 78.4% | 86.2% | 84.3% |
| Completed high school | 75.3% | 84.7% | 83.0% |
| Completed some college | 44.3% | 61.8% | 59.4% |
| Completed associate degree | 12.4% | 40.7% | 38.5% |
| Completed bachelors | 8.2% | 32.9% | 30.3% |
| Completed masters | 3.1% | 12.7% | 11.5% |
| Completed professional degree | 1.0% | 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 Brussels. Using the proficiency score averages, the average test scores for Brussels, IL schools is 35%. The average student to teacher ratio is n/a. In Brussels, IL, an average of 78.4% of students have completed 8th grade and an average of 75.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Dardenne Prairie, MO | 13,385 | 73% | 51.0% |
| Lake St. Louis, MO | 16,357 | 71% | 48.4% |
| Cottleville, MO | 5,439 | 69% | 43.1% |
| Grafton, IL | 672 | 65% | 35.4% |
| St. Peters, MO | 57,536 | 63% | 31.5% |
| Brussels, IL | 113 | 35% | 27.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Corona, NM | 113 | 58% | 19.8% |
| Allamuchy, NJ | 114 | 48% | = 100 |
| Whitewater, MT | 112 | 50% | 4.2% |
| Bartlett, NE | 114 | 45% | 6.3% |
| Mount Erie, IL | 114 | 40% | 16.7% |
| Brussels, IL | 113 | 35% | 27.1% |
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