| Index | Essex | Missouri | National |
| Average Test Scores | 82% | 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 | Essex | Missouri | National |
| Completed 8th grade | 80.9% | 86.0% | 84.3% |
| Completed high school | 74.4% | 84.2% | 83.0% |
| Completed some college | 35.1% | 57.7% | 59.4% |
| Completed associate degree | 12.0% | 35.2% | 38.5% |
| Completed bachelors | 5.4% | 27.6% | 30.3% |
| Completed masters | 2.2% | 10.4% | 11.5% |
| Completed professional degree | 0.0% | 2.8% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Essex. Using the proficiency score averages, the average test scores for Essex, MO schools is 82%. The average student to teacher ratio is n/a. In Essex, MO, an average of 80.9% of students have completed 8th grade and an average of 74.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Bloomfield, MO | 2,404 | 55% | 13.9% |
| Bell City, MO | 494 | 52% | 8.3% |
| Bernie, MO | 1,906 | 52% | 8.3% |
| Dexter, MO | 7,867 | 45% | 5.9% |
| Essex, MO | 453 | 82% | 70.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Boulevard, CA | 453 | 47% | 2.1% |
| Big Springs, NE | 453 | 39% | 19.8% |
| Burns, WY | 453 | 50% | 4.2% |
| Riley, IN | 453 | 72% | 50.0% |
| Bogue Chitto, MS | 454 | 31% | 36.5% |
| Essex, MO | 453 | 82% | 70.8% |
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