| Index | Sioux City | Iowa | National |
| Average Test Scores | 62% | 69% | 48% |
| Student/Teacher ratio | 16:1 | 13:1 | 16:1 |
| Total public schools | 30 | 1,101 | 79,221 |
| Total private schools | 11 | 208 | 24,874 |
| Total post-secondary schools | 6 | 96 | 7,963 |
| Index | Sioux City | Iowa | National |
| Completed 8th grade | 79.8% | 89.2% | 84.3% |
| Completed high school | 77.6% | 87.7% | 83.0% |
| Completed some college | 49.5% | 59.8% | 59.4% |
| Completed associate degree | 28.9% | 38.4% | 38.5% |
| Completed bachelors | 20.9% | 27.2% | 30.3% |
| Completed masters | 6.9% | 8.7% | 11.5% |
| Completed professional degree | 2.3% | 2.7% | 3.3% |
| Completed doctorate | 0.7% | 1.1% | 1.3% |
There are a total of 30 public schools, 11 private schools and 6 post-secondary schools in Sioux City. Using the proficiency score averages, the average test scores for Sioux City, IA schools is 62%. The average student to teacher ratio is 16:1. In Sioux City, IA, an average of 79.8% of students have completed 8th grade and an average of 77.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Lawton, IA | 1,055 | 92% | 91.7% |
| Bronson, IA | 325 | 80% | 65.6% |
| Hinton, IA | 805 | 78% | 62.5% |
| Sergeant Bluff, IA | 4,901 | 76% | 58.0% |
| Elk Point, SD | 2,102 | 62% | 29.5% |
| Sioux City, IA | 82,535 | 62% | 28.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Kennewick, WA | 82,633 | 46% | 4.2% |
| Melbourne, FL | 82,281 | 60% | 24.9% |
| Chino Hills, CA | 82,800 | 60% | 25.7% |
| Buena Park, CA | 82,228 | 46% | 5.2% |
| Longview, TX | 82,183 | 49% | 2.4% |
| Sioux City, IA | 82,535 | 62% | 28.8% |
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