| Index | Dexter | Missouri | National |
| Average Test Scores | 45% | 44% | 48% |
| Student/Teacher ratio | 11:1 | 14:1 | 16:1 |
| Total public schools | 6 | 1,899 | 79,221 |
| Total private schools | n/a | 531 | 24,874 |
| Total post-secondary schools | n/a | 213 | 7,963 |
| Index | Dexter | Missouri | National |
| Completed 8th grade | 75.4% | 86.0% | 84.3% |
| Completed high school | 70.4% | 84.2% | 83.0% |
| Completed some college | 43.0% | 57.7% | 59.4% |
| Completed associate degree | 21.2% | 35.2% | 38.5% |
| Completed bachelors | 13.6% | 27.6% | 30.3% |
| Completed masters | 5.5% | 10.4% | 11.5% |
| Completed professional degree | 0.8% | 2.8% | 3.3% |
| Completed doctorate | 0.3% | 1.2% | 1.3% |
There are a total of 6 public schools, n/a private schools and n/a post-secondary schools in Dexter. Using the proficiency score averages, the average test scores for Dexter, MO schools is 45%. The average student to teacher ratio is 11:1. In Dexter, MO, an average of 75.4% of students have completed 8th grade and an average of 70.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Essex, MO | 453 | 82% | 70.8% |
| Bloomfield, MO | 2,404 | 55% | 13.9% |
| Bernie, MO | 1,906 | 52% | 8.3% |
| Fisk, MO | 562 | 42% | 12.5% |
| Puxico, MO | 1,133 | 31% | 35.4% |
| Dexter, MO | 7,867 | 45% | 5.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Santa Clara, UT | 7,868 | 47% | 1.7% |
| Lampasas, TX | 7,869 | 49% | 1.8% |
| Marengo, IL | 7,871 | 44% | 8.5% |
| Aberdeen, NC | 7,862 | 43% | 11.5% |
| Lake Geneva, WI | 7,872 | 51% | 6.5% |
| Dexter, MO | 7,867 | 45% | 5.9% |
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