[Moodles]

Makes sense. If you're a moderately successful individual to go to Harvard, then if you make a decision to drop out to improve your circumstances then it's probably for a good reason, e.g. a good business venture. Similarly that's why we always hear the statistic about those who hop jobs often are the ones with the highest salaries. Whereas if you're less successful and go to a bad school or something, dropping out may also lead to a better life than your current situation, but the bar is a lot lower of what constitutes "better". Also, generally speaking, students in Harvard are probably more career-driven than the average person, so when they drop out they've probably given it more thought than others on average and thus are more likely to make a success of it.