| Index | Affton | Missouri | National |
| Average Test Scores | 50% | 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 | n/a | 213 | 7,963 |
| Index | Affton | Missouri | National |
| Completed 8th grade | 88.9% | 86.0% | 84.3% |
| Completed high school | 87.3% | 84.2% | 83.0% |
| Completed some college | 66.3% | 57.7% | 59.4% |
| Completed associate degree | 43.4% | 35.2% | 38.5% |
| Completed bachelors | 34.1% | 27.6% | 30.3% |
| Completed masters | 12.7% | 10.4% | 11.5% |
| Completed professional degree | 3.1% | 2.8% | 3.3% |
| Completed doctorate | 0.6% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Affton. Using the proficiency score averages, the average test scores for Affton, MO schools is 50%. The average student to teacher ratio is n/a. In Affton, MO, an average of 88.9% of students have completed 8th grade and an average of 87.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clayton, MO | 17,205 | 73% | 52.7% |
| Brentwood, MO | 8,283 | 70% | 45.6% |
| Olivette, MO | 8,079 | 70% | 44.8% |
| Chesterfield, MO | 48,902 | 69% | 43.2% |
| Kirkwood, MO | 28,511 | 69% | 43.1% |
| Affton, MO | 19,993 | 50% | 4.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Matteson, IL | 19,990 | 31% | 36.1% |
| Murray, KY | 19,988 | 61% | 26.6% |
| Johnstown, PA | 19,980 | 52% | 8.9% |
| Evergreen Park, IL | 19,979 | 42% | 11.6% |
| Montrose, CO | 19,970 | 34% | 29.2% |
| Affton, MO | 19,993 | 50% | 4.7% |
Here are the best places to live in Missouri
Check out the 10 most dangerous cities in Missouri
See the best places to live in Affton
Most Dangerous Cities In The US