| 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 |


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| 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 | 23,103 | 70% | 46.0% |
| Dyer, IN | 16,417 | 64% | 33.3% |
| St. John, IN | 18,872 | 64% | 32.3% |
| Schererville, IN | 29,136 | 63% | 30.2% |
| Hickory Hills, IL | 14,635 | 63% | 30.2% |
| Flossmoor, IL | 9,604 | 45% | 7.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Alamosa, CO | 9,594 | 29% | 40.4% |
| Greenwood, AR | 9,615 | 64% | 33.7% |
| Monticello, AR | 9,618 | 37% | 23.3% |
| Cairo, GA | 9,586 | 27% | 44.2% |
| Belmont, VA | 9,583 | 89% | 85.4% |
| Flossmoor, IL | 9,604 | 45% | 7.3% |