| Index | Brentwood | Missouri | National |
| Average Test Scores | 70% | 44% | 48% |
| Student/Teacher ratio | 11:1 | 14:1 | 16:1 |
| Total public schools | 4 | 1,899 | 79,221 |
| Total private schools | n/a | 531 | 24,874 |
| Total post-secondary schools | n/a | 213 | 7,963 |
| Index | Brentwood | Missouri | National |
| Completed 8th grade | 97.6% | 86.0% | 84.3% |
| Completed high school | 97.4% | 84.2% | 83.0% |
| Completed some college | 88.1% | 57.7% | 59.4% |
| Completed associate degree | 76.8% | 35.2% | 38.5% |
| Completed bachelors | 71.2% | 27.6% | 30.3% |
| Completed masters | 33.0% | 10.4% | 11.5% |
| Completed professional degree | 9.5% | 2.8% | 3.3% |
| Completed doctorate | 3.9% | 1.2% | 1.3% |
There are a total of 4 public schools, n/a private schools and n/a post-secondary schools in Brentwood. Using the proficiency score averages, the average test scores for Brentwood, MO schools is 70%. The average student to teacher ratio is 11:1. In Brentwood, MO, an average of 97.6% of students have completed 8th grade and an average of 97.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clayton, MO | 16,763 | 73% | 52.7% |
| Olivette, MO | 7,837 | 70% | 44.8% |
| Chesterfield, MO | 47,603 | 69% | 43.2% |
| Kirkwood, MO | 27,772 | 69% | 43.1% |
| Webster Groves, MO | 22,906 | 64% | 32.8% |
| Brentwood, MO | 7,986 | 70% | 45.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Minnetrista, MN | 7,989 | 77% | 59.4% |
| Makawao, HI | 7,989 | 45% | 6.3% |
| Duvall, WA | 7,979 | 77% | 60.4% |
| Tiverton, RI | 7,996 | 52% | 7.5% |
| Wyoming, MN | 7,976 | 60% | 24.5% |
| Brentwood, MO | 7,986 | 70% | 45.6% |
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