| Index | Sigel | 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 | Sigel | Illinois | National |
| Completed 8th grade | 92.0% | 86.2% | 84.3% |
| Completed high school | 90.7% | 84.7% | 83.0% |
| Completed some college | 56.2% | 61.8% | 59.4% |
| Completed associate degree | 26.1% | 40.7% | 38.5% |
| Completed bachelors | 11.1% | 32.9% | 30.3% |
| Completed masters | 4.0% | 12.7% | 11.5% |
| Completed professional degree | 0.9% | 3.4% | 3.3% |
| Completed doctorate | 0.4% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Sigel. Using the proficiency score averages, the average test scores for Sigel, IL schools is n/a. The average student to teacher ratio is n/a. In Sigel, IL, an average of 92.0% of students have completed 8th grade and an average of 90.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Teutopolis, IL | 1,807 | 62% | 28.1% |
| Dieterich, IL | 726 | 53% | 10.9% |
| Strasburg, IL | 528 | 37% | 22.4% |
| Effingham, IL | 12,310 | 29% | 39.6% |
| Toledo, IL | 1,163 | 28% | 42.4% |
| Sigel, IL | 419 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Junction City, WI | 419 | 52% | 8.3% |
| Lynd, MN | 419 | 45% | 6.3% |
| Gypsum, KS | 419 | 35% | 26.6% |
| Spalding, NE | 419 | 63% | 30.2% |
| Nordheim, TX | 419 | 42% | 12.5% |
| Sigel, IL | 419 | n/a |
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