I, too, have to wonder how many kids our (sarcasm alert) NEW! Improved! State-of-the-Art!! educational system is utterly failing because we as a culture are simply disregarding the fact that not everyone is has destiny/desire for highly demanding cognitive tasks like advanced mathematics or critical analyses of great works of literature...
DH is a prime example of this. The man is extremely intelligent. He knows more about electronics, especially in motor vehicles, than I would ever want to know. He was "pushed" towards a liberal arts education and dropped out before graduating. Had he been pushed to a trade school or to an apprenticeship like IBEW has, he would've excelled beyond expectations. Sure, he was a great student in HS. Sure, he graduated with honors, but that still doesn't mean that a 4 year liberal arts college degree was what he needed.
So add him to the list that has skewed the numbers along the way because we, as a country, choose one track for everyone, regardless of levels of intelligence, passions, strengths and need.