| Index | Sibley | Illinois | National |
| Average Test Scores | n/a | 33% | 48% |
| Student/Teacher ratio | n/a | 18:1 | 16:1 |
| Total public schools | n/a | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Sibley | Illinois | National |
| Completed 8th grade | 83.5% | 86.2% | 84.3% |
| Completed high school | 83.5% | 84.7% | 83.0% |
| Completed some college | 40.7% | 61.8% | 59.4% |
| Completed associate degree | 12.3% | 40.7% | 38.5% |
| Completed bachelors | 8.6% | 32.9% | 30.3% |
| Completed masters | 0.4% | 12.7% | 11.5% |
| Completed professional degree | 0.4% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a 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, IL schools is n/a. The average student to teacher ratio is n/a. In Sibley, IL, an average of 83.5% of students have completed 8th grade and an average of 83.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Forrest, IL | 1,017 | 46% | 3.6% |
| Gibson City, IL | 3,412 | 44% | 8.0% |
| Piper City, IL | 874 | 42% | 12.5% |
| Fairbury, IL | 3,744 | 39% | 18.2% |
| Paxton, IL | 4,170 | 37% | 22.6% |
| Sibley, IL | 229 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Raiford, FL | 229 | 50% | 4.2% |
| South Salem, OH | 229 | 70% | 44.8% |
| Hysham, MT | 229 | 50% | 4.2% |
| Mooresboro, NC | 229 | 73% | 51.0% |
| Dwight, NE | 228 | 50% | 4.2% |
| Sibley, IL | 229 | n/a |
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