| Index | St. Charles | Kentucky | National |
| Average Test Scores | n/a | 48% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 1,157 | 79,221 |
| Total private schools | n/a | 298 | 24,874 |
| Total post-secondary schools | n/a | 130 | 7,963 |
| Index | St. Charles | Kentucky | National |
| Completed 8th grade | 68.2% | 81.0% | 84.3% |
| Completed high school | 53.0% | 77.8% | 83.0% |
| Completed some college | 17.2% | 51.3% | 59.4% |
| Completed associate degree | 8.6% | 30.5% | 38.5% |
| Completed bachelors | 0.0% | 22.7% | 30.3% |
| Completed masters | 0.0% | 9.3% | 11.5% |
| Completed professional degree | 0.0% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 0.9% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in St. Charles. Using the proficiency score averages, the average test scores for St. Charles, KY schools is n/a. The average student to teacher ratio is n/a. In St. Charles, KY, an average of 68.2% of students have completed 8th grade and an average of 53.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Earlington, KY | 1,043 | 67% | 39.6% |
| Crofton, KY | 434 | 55% | 14.6% |
| Nortonville, KY | 985 | 54% | 12.0% |
| Nebo, KY | 162 | 54% | 11.5% |
| Madisonville, KY | 18,801 | 52% | 9.1% |
| St. Charles, KY | 305 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Dubberly, LA | 305 | 69% | 42.7% |
| La Plant, SD | 305 | 5% | 89.6% |
| New Ringgold, PA | 305 | 52% | 8.3% |
| Dyer, NV | 305 | 30% | 37.5% |
| Millsap, TX | 305 | 50% | 4.5% |
| St. Charles, KY | 305 | n/a |
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