I also was able to take a few college courses while a junior and senior in high school. The board exam wasn't an option for me at that time, but I was encouraged to enroll in college-level calculus and physics courses during the last year of high school.
I didn't have to attend at night; I was given permission to drive there and back during a long block of "study-hall" free time that was arranged for me by the school principal. Seeing as how the study-halls weren't really a social opportunity at my high school, attending those classes didn't impact my social life much.
I think this program is a terrific idea, offering advanced opportunity for those who can handle it, and spotlighting areas of deficiency before students reach college and are shocked to discover they need remedial courses in math, and even in English.
Based on my own experiences, I think this is stimulus money well-spent.
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Helice ~~~ (Nemo me impune lacesset.)
It is better to be a human being dissatisfied than a pig
satisfied; better to be Socrates dissatisfied than a fool satisfied.
And if the fool, or the pig, are a different opinion, it is because
they only know their own side of the question. The other party to
the comparison knows both sides.
--John Stuart Mill, UTILITARIANISM, 1863