| Index | St. Charles | Virginia | National |
| Average Test Scores | 83% | 79% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,596 | 79,221 |
| Total private schools | n/a | 553 | 24,874 |
| Total post-secondary schools | n/a | 199 | 7,963 |
| Index | St. Charles | Virginia | National |
| Completed 8th grade | 75.0% | 85.9% | 84.3% |
| Completed high school | 63.6% | 84.7% | 83.0% |
| Completed some college | 36.4% | 64.1% | 59.4% |
| Completed associate degree | 0.0% | 44.2% | 38.5% |
| Completed bachelors | 0.0% | 36.9% | 30.3% |
| Completed masters | 0.0% | 15.7% | 11.5% |
| Completed professional degree | 0.0% | 4.2% | 3.3% |
| Completed doctorate | 0.0% | 1.7% | 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, VA schools is 83%. The average student to teacher ratio is n/a. In St. Charles, VA, an average of 75.0% of students have completed 8th grade and an average of 63.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Duffield, VA | 83 | 86% | 78.6% |
| Pennington Gap, VA | 2,310 | 82% | 71.4% |
| Dryden, VA | 891 | 82% | 70.8% |
| Jonesville, VA | 1,355 | 79% | 64.2% |
| Cawood, KY | 489 | 65% | 34.4% |
| St. Charles, VA | 61 | 83% | 71.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Klukwan, AK | 61 | 50% | 4.2% |
| Yucca, AZ | 61 | 50% | 4.2% |
| Crookston, NE | 61 | 30% | 37.5% |
| Menoken, ND | 61 | 60% | 25.0% |
| Sasakwa, OK | 61 | 13% | 72.4% |
| St. Charles, VA | 61 | 83% | 71.9% |
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