| Index | Sibley | Iowa | National |
| Average Test Scores | 71% | 69% | 48% |
| Student/Teacher ratio | 15:1 | 13:1 | 16:1 |
| Total public schools | 3 | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Sibley | Iowa | National |
| Completed 8th grade | 85.0% | 89.2% | 84.3% |
| Completed high school | 82.3% | 87.7% | 83.0% |
| Completed some college | 49.2% | 59.8% | 59.4% |
| Completed associate degree | 29.3% | 38.4% | 38.5% |
| Completed bachelors | 20.3% | 27.2% | 30.3% |
| Completed masters | 6.3% | 8.7% | 11.5% |
| Completed professional degree | 1.0% | 2.7% | 3.3% |
| Completed doctorate | 0.2% | 1.1% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Sibley. Using the proficiency score averages, the average test scores for Sibley, IA schools is 71%. The average student to teacher ratio is 15:1. In Sibley, IA, an average of 85.0% of students have completed 8th grade and an average of 82.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Boyden, IA | 905 | 80% | 65.6% |
| George, IA | 1,011 | 78% | 61.5% |
| Little Rock, IA | 458 | 61% | 27.1% |
| Ellsworth, MN | 522 | 55% | 14.6% |
| Sibley, IA | 2,599 | 71% | 48.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Fairview, OK | 2,600 | 46% | 5.2% |
| Christopher, IL | 2,601 | 24% | 50.5% |
| Okolona, MS | 2,601 | 30% | 38.2% |
| White Salmon, WA | 2,601 | 52% | 7.8% |
| Holyoke, CO | 2,596 | 33% | 30.7% |
| Sibley, IA | 2,599 | 71% | 48.3% |
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