| Index | St. Charles | Arkansas | National |
| Average Test Scores | n/a | 45% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 860 | 79,221 |
| Total private schools | n/a | 165 | 24,874 |
| Total post-secondary schools | n/a | 98 | 7,963 |
| Index | St. Charles | Arkansas | National |
| Completed 8th grade | 80.7% | 80.7% | 84.3% |
| Completed high school | 77.5% | 79.0% | 83.0% |
| Completed some college | 38.9% | 50.5% | 59.4% |
| Completed associate degree | 27.0% | 27.9% | 38.5% |
| Completed bachelors | 16.4% | 21.5% | 30.3% |
| Completed masters | 2.5% | 7.6% | 11.5% |
| Completed professional degree | 0.0% | 2.2% | 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, AR schools is n/a. The average student to teacher ratio is n/a. In St. Charles, AR, an average of 80.7% of students have completed 8th grade and an average of 77.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| DeWitt, AR | 3,046 | 47% | 1.4% |
| Marvell, AR | 1,620 | 14% | 71.9% |
| St. Charles, AR | 338 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Mount Calm, TX | 338 | 37% | 22.9% |
| Stratton, NE | 338 | 50% | 4.2% |
| Simms, MT | 338 | 35% | 27.1% |
| Northway, AK | 338 | 10% | 79.2% |
| Tununak, AK | 338 | 7% | 86.5% |
| St. Charles, AR | 338 | n/a |
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