| 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 |
| 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 | 13,385 | 73% | 51.0% |
| Lake St. Louis, MO | 16,357 | 71% | 48.4% |
| Weldon Spring, MO | 5,536 | 70% | 45.5% |
| Chesterfield, MO | 47,603 | 69% | 43.2% |
| Kirkwood, MO | 27,772 | 69% | 43.1% |
| Cottleville, MO | 5,439 | 69% | 43.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Eagleville, PA | 5,439 | 73% | 51.8% |
| Carver, MN | 5,438 | 67% | 39.1% |
| Cottonwood, CA | 5,435 | 46% | 3.5% |
| Leakesville, MS | 5,443 | 45% | 6.3% |
| Breckenridge, TX | 5,435 | 35% | 26.8% |
| Cottleville, MO | 5,439 | 69% | 43.1% |
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