For the last two weeks (or more) its been pretty doubtful he'll be joining us this fall. I think the class he took last summer which was recommended by his HS advisor actually fell outside the list of approved classes (or so I'm told) that would help improve his grades in his core GPA. Sounds like he's going to fall just short because his academic advisor is a moron. They're still trying to get the class approved by submitting the class syllabus and curriculum but its a long shot.
Okay, this falls a bit outside my knowledge but if the poster above is correct and the high school is accredited and if the curriculum is state approved and either an elective that falls in a core subject then there CANT be a problem with that part of it. So it might be, like Da said, a class that was outside of the approved list the problem is, I have never seen that list, the NCAA doesnt give you a list of classes it gives you a list of rules. So that could be the issue.
To the question about taking to many summer classes? Some states differ on that, I know, but as far as the NCAA, not that I know of BUT it could red flag a kid, sometimes it looks a bit odd.