| Index | Charles City | Iowa | National |
| Average Test Scores | 54% | 69% | 48% |
| Student/Teacher ratio | 13:1 | 13:1 | 16:1 |
| Total public schools | 5 | 1,101 | 79,221 |
| Total private schools | 1 | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
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| Index | Charles City | Iowa | National |
| Completed 8th grade | 84.8% | 89.2% | 84.3% |
| Completed high school | 82.3% | 87.7% | 83.0% |
| Completed some college | 50.1% | 59.8% | 59.4% |
| Completed associate degree | 31.5% | 38.4% | 38.5% |
| Completed bachelors | 21.0% | 27.2% | 30.3% |
| Completed masters | 4.7% | 8.7% | 11.5% |
| Completed professional degree | 1.7% | 2.7% | 3.3% |
| Completed doctorate | 1.0% | 1.1% | 1.3% |
There are a total of 5 public schools, 1 private schools and n/a post-secondary schools in Charles City. Using the proficiency score averages, the average test scores for Charles City, IA schools is 54%. The average student to teacher ratio is 13:1. In Charles City, IA, an average of 84.8% of students have completed 8th grade and an average of 82.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Nashua, IA | 1,448 | 76% | 57.8% |
| Rockford, IA | 827 | 75% | 55.2% |
| Greene, IA | 1,182 | 65% | 34.4% |
| Charles City, IA | 7,351 | 54% | 11.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Sandwich, IL | 7,351 | 46% | 5.2% |
| Globe, AZ | 7,351 | 29% | 39.9% |
| Iron Mountain, MI | 7,352 | 41% | 13.8% |
| Hudsonville, MI | 7,353 | 71% | 47.8% |
| Tuttle, OK | 7,348 | 48% | 0.5% |
| Charles City, IA | 7,351 | 54% | 11.8% |
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