Earlier quoted context omitted.
Having a year (or more) of college credits upon high school graduation should be one of the education tracks available to every student. It's a massive failure of imagination that this isn't already the case.
Why should you have to get credits before you leave High School? Just teach more advanced subjects in both High School and College. I agree with what you are saying but I think it’s a product of a failure somewhere else in the education system. No child left behind and other programs hinder education by applying one size fits all policies.
Simply making High School arbitrarily harder is kind of meaningless if most students would fail the material.