| Index | Cottleville | Missouri | National |
| Average Test Scores | 69% | 44% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 1,899 | 79,221 |
| Total private schools | n/a | 531 | 24,874 |
| Total post-secondary schools | 1 | 213 | 7,963 |
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| Index | Cottleville | Missouri | National |
| Completed 8th grade | 97.7% | 86.0% | 84.3% |
| Completed high school | 97.5% | 84.2% | 83.0% |
| Completed some college | 76.5% | 57.7% | 59.4% |
| Completed associate degree | 58.5% | 35.2% | 38.5% |
| Completed bachelors | 48.2% | 27.6% | 30.3% |
| Completed masters | 15.7% | 10.4% | 11.5% |
| Completed professional degree | 5.6% | 2.8% | 3.3% |
| Completed doctorate | 2.2% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and 1 post-secondary schools in Cottleville. Using the proficiency score averages, the average test scores for Cottleville, MO schools is 69%. The average student to teacher ratio is n/a. In Cottleville, MO, an average of 97.7% of students have completed 8th grade and an average of 97.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Dardenne Prairie, MO | 13,884 | 73% | 51.0% |
| Lake St. Louis, MO | 16,749 | 71% | 48.4% |
| Weldon Spring, MO | 5,688 | 70% | 45.5% |
| Chesterfield, MO | 48,902 | 69% | 43.2% |
| Kirkwood, MO | 28,511 | 69% | 43.1% |
| Cottleville, MO | 5,566 | 69% | 43.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Cottonwood, CA | 5,564 | 46% | 3.5% |
| Chelsea, MI | 5,563 | 65% | 36.1% |
| Davenport, FL | 5,569 | 52% | 7.4% |
| St. Paul Park, MN | 5,562 | 49% | 2.6% |
| Emporia, VA | 5,571 | 64% | 32.8% |
| Cottleville, MO | 5,566 | 69% | 43.1% |
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