| Index | Lemont | Illinois | National |
| Average Test Scores | 53% | 33% | 48% |
| Student/Teacher ratio | 18:1 | 18:1 | 16:1 |
| Total public schools | 6 | 3,938 | 79,221 |
| Total private schools | 6 | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Lemont | Illinois | National |
| Completed 8th grade | 92.3% | 86.2% | 84.3% |
| Completed high school | 91.0% | 84.7% | 83.0% |
| Completed some college | 68.3% | 61.8% | 59.4% |
| Completed associate degree | 48.1% | 40.7% | 38.5% |
| Completed bachelors | 39.3% | 32.9% | 30.3% |
| Completed masters | 11.4% | 12.7% | 11.5% |
| Completed professional degree | 2.1% | 3.4% | 3.3% |
| Completed doctorate | 1.0% | 1.2% | 1.3% |
There are a total of 6 public schools, 6 private schools and n/a post-secondary schools in Lemont. Using the proficiency score averages, the average test scores for Lemont, IL schools is 53%. The average student to teacher ratio is 18:1. In Lemont, IL, an average of 92.3% of students have completed 8th grade and an average of 91.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Oak Brook, IL | 8,085 | 79% | 64.6% |
| Clarendon Hills, IL | 8,834 | 77% | 59.4% |
| Hinsdale, IL | 17,366 | 74% | 54.7% |
| Western Springs, IL | 13,247 | 74% | 54.4% |
| Riverside, IL | 8,748 | 65% | 35.2% |
| Lemont, IL | 17,131 | 53% | 9.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Lebanon, OR | 17,144 | 44% | 8.3% |
| Springfield, TN | 17,147 | 28% | 42.2% |
| Massapequa Park, NY | 17,152 | 64% | 32.6% |
| Damascus, MD | 17,105 | 58% | 20.6% |
| Vero Beach, FL | 17,163 | 58% | 21.6% |
| Lemont, IL | 17,131 | 53% | 9.4% |
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