Ask HN: Education level of successful tech founders?

What is the average highest level of education attained by those who have sold their technology-based companies for a personal gain of $10+ million?

Inspired by the Reddit AMA posted yesterday (man sold startup for $20 million, has Bachelor's degree), I began wondering how I could realistically do the same. As a college student, a very immediate issue is graduate school - to go or not to go? Naturally there are other factors, but I'm really wondering about statistics: how often do founders at each level of education succeed impressively but repeatably?

This seems like the kind of statistic that would interest the HN community, but I could not find a similar submission.