| Index | Mount Carroll | Illinois | National |
| Average Test Scores | 17% | 33% | 48% |
| Student/Teacher ratio | 19:1 | 18:1 | 16:1 |
| Total public schools | 2 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Mount Carroll | Illinois | National |
| Completed 8th grade | 89.9% | 86.2% | 84.3% |
| Completed high school | 89.0% | 84.7% | 83.0% |
| Completed some college | 55.2% | 61.8% | 59.4% |
| Completed associate degree | 29.9% | 40.7% | 38.5% |
| Completed bachelors | 22.6% | 32.9% | 30.3% |
| Completed masters | 8.2% | 12.7% | 11.5% |
| Completed professional degree | 2.3% | 3.4% | 3.3% |
| Completed doctorate | 0.7% | 1.2% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Mount Carroll. Using the proficiency score averages, the average test scores for Mount Carroll, IL schools is 17%. The average student to teacher ratio is 19:1. In Mount Carroll, IL, an average of 89.9% of students have completed 8th grade and an average of 89.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Chadwick, IL | 529 | 52% | 8.9% |
| Shannon, IL | 745 | 50% | 3.1% |
| Lanark, IL | 1,453 | 47% | 2.1% |
| Pearl City, IL | 831 | 41% | 15.6% |
| Milledgeville, IL | 987 | 35% | 27.1% |
| Mount Carroll, IL | 1,503 | 17% | 65.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Oakdale, PA | 1,503 | 78% | 63.0% |
| Wood River, NE | 1,503 | 58% | 20.8% |
| Clear Lake, SD | 1,503 | 42% | 12.2% |
| Battle Creek, NE | 1,503 | 60% | 24.0% |
| Erie, KS | 1,503 | 31% | 35.4% |
| Mount Carroll, IL | 1,503 | 17% | 65.6% |
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