This was 23.1 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 251.
92.8 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Lerna for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 13 | 7.2 |
| Regular high school diploma | 88 | 48.9 |
| GED or alternative credential | 10 | 5.6 |
| Some college, less than 1 year | 20 | 11.1 |
| Some college, 1 or more years, no degree | 12 | 6.7 |
| Associate's degree | 20 | 11.1 |
| Bachelor's degree | 12 | 6.7 |
| Master's degree | 5 | 2.8 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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