| Index | Flossmoor | Illinois | National |
| Average Test Scores | 33% | 31% | 49% |
| 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 33%. 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, State | Population | Avg. Test Scores | National Avg. |
| Munster, IN | 23,103 | 83% | 69% |
| St. John, IN | 15,777 | 79% | 60% |
| Cedar Lake, IN | 11,872 | 75% | 53% |
| Highland, IN | 23,107 | 74% | 50% |
| Schererville, IN | 28,899 | 73% | 49% |
| Flossmoor, IL | 9,215 | 33% | 33% |
| City, State | Population | Avg. Test Scores | National Avg. |
| Fairview, OR | 9,215 | 29% | 41% |
| Chanute, KS | 9,216 | 33% | 33% |
| Gifford, FL | 9,218 | 50% | 1% |
| Bithlo, FL | 9,218 | 53% | 7% |
| Fort Polk South, LA | 9,219 | 79% | 61% |
| Flossmoor, IL | 9,215 | 33% | 33% |
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