This was 28.8 percent lower than the state average of 48.4 percent. In 2020 the total municipality population reached 56.
96.1 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Hadley for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 2 | 3.9 |
| Regular high school diploma | 26 | 51 |
| GED or alternative credential | 1 | 2 |
| Some college, less than 1 year | 6 | 11.8 |
| Some college, 1 or more years, no degree | 6 | 11.8 |
| Associate's degree | 2 | 3.9 |
| Bachelor's degree | 8 | 15.7 |
| Master's degree | 0 | 0 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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