A search reveals that educational level achieved was in a polls only thread:
In comparison national numbers as of 2018 according to US Census bureau by way of Wikipedia:
Educational attainment in the United States (2018)[5]|Education|Age 25 and over|Age 25-30|
| — | — | — |
|High school diploma or GED|89.80%|92.95%|
|Some college|61.28%|66.34%|
|Associate degree|45.16%|46.72%|
|Bachelor’s degree|34.98%|36.98%|
|Master’s degree|13.04%|9.01%|
|Professional degree|3.47%|2.02%|
|Doctorate|2.03%|1.12%|
So yes much more skewed to more highly educated than the general adult population, based on that sample anyway.