| Index | Dellwood | Missouri | National |
| Average Test Scores | n/a | 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 | Dellwood | Missouri | National |
| Completed 8th grade | 85.6% | 86.0% | 84.3% |
| Completed high school | 83.9% | 84.2% | 83.0% |
| Completed some college | 59.1% | 57.7% | 59.4% |
| Completed associate degree | 27.4% | 35.2% | 38.5% |
| Completed bachelors | 17.2% | 27.6% | 30.3% |
| Completed masters | 5.7% | 10.4% | 11.5% |
| Completed professional degree | 0.2% | 2.8% | 3.3% |
| Completed doctorate | 0.2% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Dellwood. Using the proficiency score averages, the average test scores for Dellwood, MO schools is n/a. The average student to teacher ratio is n/a. In Dellwood, MO, an average of 85.6% of students have completed 8th grade and an average of 83.9% 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% |
| Kirkwood, MO | 28,511 | 69% | 43.1% |
| Webster Groves, MO | 23,373 | 64% | 32.8% |
| Dellwood, MO | 5,122 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Post, TX | 5,122 | 33% | 31.0% |
| Lexington, OH | 5,124 | 81% | 68.5% |
| Alexandria, IN | 5,125 | 38% | 20.8% |
| West Salem, WI | 5,126 | 51% | 6.6% |
| Midfield, AL | 5,127 | 16% | 66.0% |
| Dellwood, MO | 5,122 | n/a |
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