This was 12.3 percent lower than the state average of 43.2 percent. In 2020 the total municipality population reached 146.
96.4 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Grafton for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 4 | 3.6 |
| Regular high school diploma | 54 | 49.1 |
| GED or alternative credential | 5 | 4.5 |
| Some college, less than 1 year | 4 | 3.6 |
| Some college, 1 or more years, no degree | 9 | 8.2 |
| Associate's degree | 21 | 19.1 |
| Bachelor's degree | 13 | 11.8 |
| Master's degree | 0 | 0 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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