| Index | Essex | Iowa | National |
| Average Test Scores | 70% | 69% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Essex | Iowa | National |
| Completed 8th grade | 88.4% | 89.2% | 84.3% |
| Completed high school | 87.1% | 87.7% | 83.0% |
| Completed some college | 50.2% | 59.8% | 59.4% |
| Completed associate degree | 24.7% | 38.4% | 38.5% |
| Completed bachelors | 14.4% | 27.2% | 30.3% |
| Completed masters | 4.5% | 8.7% | 11.5% |
| Completed professional degree | 0.3% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 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, IA schools is 70%. The average student to teacher ratio is n/a. In Essex, IA, an average of 88.4% of students have completed 8th grade and an average of 87.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Stanton, IA | 627 | 81% | 68.8% |
| Hastings, IA | 154 | 77% | 60.4% |
| Shenandoah, IA | 4,859 | 76% | 57.3% |
| Malvern, IA | 1,153 | 72% | 50.0% |
| Clarinda, IA | 5,371 | 61% | 26.0% |
| Essex, IA | 772 | 70% | 45.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Normangee, TX | 772 | 48% | 1.0% |
| Aurora, NC | 772 | 27% | 43.8% |
| Tribune, KS | 772 | 25% | 49.0% |
| Greensburg, KS | 772 | 36% | 25.7% |
| Swansea, SC | 773 | 30% | 38.0% |
| Essex, IA | 772 | 70% | 45.8% |
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