This was 29 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 258.
90.6 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Henning for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 16 | 9.4 |
| Regular high school diploma | 73 | 42.9 |
| GED or alternative credential | 14 | 8.2 |
| Some college, less than 1 year | 20 | 11.8 |
| Some college, 1 or more years, no degree | 22 | 12.9 |
| Associate's degree | 23 | 13.5 |
| Bachelor's degree | 1 | 0.6 |
| Master's degree | 0 | 0 |
| Professional school degree | 1 | 0.6 |
| Doctorate degree | 0 | 0 |
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