| Index | Carroll | Iowa | National |
| Average Test Scores | 73% | 69% | 48% |
| Student/Teacher ratio | 14:1 | 13:1 | 16:1 |
| Total public schools | 5 | 1,101 | 79,221 |
| Total private schools | 2 | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Carroll | Iowa | National |
| Completed 8th grade | 91.6% | 89.2% | 84.3% |
| Completed high school | 87.8% | 87.7% | 83.0% |
| Completed some college | 55.3% | 59.8% | 59.4% |
| Completed associate degree | 37.7% | 38.4% | 38.5% |
| Completed bachelors | 25.1% | 27.2% | 30.3% |
| Completed masters | 7.7% | 8.7% | 11.5% |
| Completed professional degree | 4.0% | 2.7% | 3.3% |
| Completed doctorate | 2.2% | 1.1% | 1.3% |
There are a total of 5 public schools, 2 private schools and n/a post-secondary schools in Carroll. Using the proficiency score averages, the average test scores for Carroll, IA schools is 73%. The average student to teacher ratio is 14:1. In Carroll, IA, an average of 91.6% of students have completed 8th grade and an average of 87.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Lake City, IA | 1,788 | 90% | 86.5% |
| Coon Rapids, IA | 1,284 | 77% | 60.4% |
| Manning, IA | 1,603 | 76% | 57.8% |
| Wall Lake, IA | 788 | 70% | 44.8% |
| Westside, IA | 258 | 69% | 42.7% |
| Carroll, IA | 10,175 | 73% | 51.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Denham Springs, LA | 10,174 | 80% | 67.0% |
| Russellville, AL | 10,174 | 38% | 20.3% |
| Gages Lake, IL | 10,172 | 46% | 5.2% |
| Wimauma, FL | 10,172 | 49% | 2.5% |
| Coweta, OK | 10,178 | 37% | 23.7% |
| Carroll, IA | 10,175 | 73% | 51.7% |
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