| Index | Flossmoor | Illinois | National |
| Average Test Scores | 45% | 33% | 48% |
| Student/Teacher ratio | 17:1 | 18:1 | 16:1 |
| Total public schools | 5 | 3,938 | 79,221 |
| Total private schools | 4 | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Flossmoor | Illinois | National |
| Completed 8th grade | 96.7% | 86.2% | 84.3% |
| Completed high school | 96.5% | 84.7% | 83.0% |
| Completed some college | 86.0% | 61.8% | 59.4% |
| Completed associate degree | 66.4% | 40.7% | 38.5% |
| Completed bachelors | 62.2% | 32.9% | 30.3% |
| Completed masters | 31.5% | 12.7% | 11.5% |
| Completed professional degree | 13.0% | 3.4% | 3.3% |
| Completed doctorate | 6.1% | 1.2% | 1.3% |
There are a total of 5 public schools, 4 private schools and n/a post-secondary schools in Flossmoor. Using the proficiency score averages, the average test scores for Flossmoor, IL schools is 45%. The average student to teacher ratio is 17:1. In Flossmoor, IL, an average of 96.7% of students have completed 8th grade and an average of 96.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Munster, IN | 22,604 | 70% | 46.0% |
| Dyer, IN | 15,933 | 64% | 33.3% |
| St. John, IN | 18,382 | 64% | 32.3% |
| Hickory Hills, IL | 14,253 | 63% | 30.2% |
| Schererville, IN | 28,559 | 63% | 30.2% |
| Flossmoor, IL | 9,318 | 45% | 7.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Hartland, WI | 9,317 | 69% | 44.0% |
| Eagle Point, OR | 9,316 | 43% | 10.9% |
| Sellersburg, IN | 9,320 | 51% | 6.5% |
| Hondo, TX | 9,321 | 41% | 13.9% |
| College Place, WA | 9,311 | 49% | 2.1% |
| Flossmoor, IL | 9,318 | 45% | 7.3% |
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