| Index | Ethan | South Dakota | National |
| Average Test Scores | 65% | 48% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Ethan | South Dakota | National |
| Completed 8th grade | 90.6% | 89.1% | 84.3% |
| Completed high school | 89.5% | 86.8% | 83.0% |
| Completed some college | 53.1% | 60.4% | 59.4% |
| Completed associate degree | 31.0% | 38.5% | 38.5% |
| Completed bachelors | 15.5% | 27.5% | 30.3% |
| Completed masters | 1.8% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 2.5% | 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 Ethan. Using the proficiency score averages, the average test scores for Ethan, SD schools is 65%. The average student to teacher ratio is n/a. In Ethan, SD, an average of 90.6% of students have completed 8th grade and an average of 89.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Parkston, SD | 1,756 | 58% | 20.6% |
| Alexandria, SD | 766 | 58% | 20.4% |
| Mitchell, SD | 15,599 | 52% | 8.7% |
| Mount Vernon, SD | 500 | 48% | 0.7% |
| Ethan, SD | 328 | 65% | 35.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Keytesville, MO | 328 | 30% | 37.5% |
| Camp Sherman, OR | 327 | 50% | 4.2% |
| Grainfield, KS | 329 | 50% | 4.2% |
| Mentone, AL | 327 | 70% | 45.8% |
| Taloga, OK | 327 | 45% | 6.3% |
| Ethan, SD | 328 | 65% | 35.2% |
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