| Index | Frankfort | Illinois | National |
| Average Test Scores | 56% | 33% | 48% |
| Student/Teacher ratio | 19:1 | 18:1 | 16:1 |
| Total public schools | 10 | 3,938 | 79,221 |
| Total private schools | 3 | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Frankfort | Illinois | National |
| Completed 8th grade | 96.1% | 86.2% | 84.3% |
| Completed high school | 95.7% | 84.7% | 83.0% |
| Completed some college | 79.8% | 61.8% | 59.4% |
| Completed associate degree | 63.0% | 40.7% | 38.5% |
| Completed bachelors | 55.9% | 32.9% | 30.3% |
| Completed masters | 22.1% | 12.7% | 11.5% |
| Completed professional degree | 6.3% | 3.4% | 3.3% |
| Completed doctorate | 2.5% | 1.2% | 1.3% |
There are a total of 10 public schools, 3 private schools and n/a post-secondary schools in Frankfort. Using the proficiency score averages, the average test scores for Frankfort, IL schools is 56%. The average student to teacher ratio is 19:1. In Frankfort, IL, an average of 96.1% of students have completed 8th grade and an average of 95.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Palos Park, IL | 4,779 | 61% | 26.6% |
| Homer Glen, IL | 24,521 | 55% | 14.6% |
| Manhattan, IL | 8,218 | 54% | 12.5% |
| Palos Hills, IL | 17,172 | 53% | 9.9% |
| Lemont, IL | 17,131 | 53% | 9.4% |
| Frankfort, IL | 19,166 | 56% | 16.3% |
| City | Population | Avg. Test Scores | National Avg. |
| North Liberty, IA | 19,159 | 75% | 56.1% |
| Nanuet, NY | 19,148 | 68% | 41.7% |
| Hermosa Beach, CA | 19,147 | 78% | 62.5% |
| Carlisle, PA | 19,188 | 57% | 19.6% |
| Broadview Heights, OH | 19,195 | 90% | 86.5% |
| Frankfort, IL | 19,166 | 56% | 16.3% |
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