| Index | Clear Lake | 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 |


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| Index | Clear Lake | Illinois | National |
| Completed 8th grade | 69.7% | 86.2% | 84.3% |
| Completed high school | 66.3% | 84.7% | 83.0% |
| Completed some college | 27.5% | 61.8% | 59.4% |
| Completed associate degree | 6.2% | 40.7% | 38.5% |
| Completed bachelors | 4.5% | 32.9% | 30.3% |
| Completed masters | 0.6% | 12.7% | 11.5% |
| Completed professional degree | 0.6% | 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 Clear Lake. Using the proficiency score averages, the average test scores for Clear Lake, IL schools is n/a. The average student to teacher ratio is n/a. In Clear Lake, IL, an average of 69.7% of students have completed 8th grade and an average of 66.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Sherman, IL | 4,470 | 67% | 38.5% |
| Cantrall, IL | 104 | 45% | 6.3% |
| Williamsville, IL | 1,468 | 45% | 6.3% |
| Chatham, IL | 13,231 | 42% | 11.6% |
| Athens, IL | 2,349 | 37% | 22.9% |
| Clear Lake, IL | 386 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Longton, KS | 386 | 45% | 6.3% |
| Hartsburg, IL | 386 | 32% | 33.3% |
| Paisley, OR | 386 | 52% | 8.3% |
| Bonesteel, SD | 386 | 40% | 16.7% |
| Sarita, TX | 386 | 60% | 25.0% |
| Clear Lake, IL | 386 | n/a |