I've shared my personal (positive) experience with radical acceleration/early college on the first of the threads indigo linked (and, I think, on one of the others).

I'll repeat that there is no blanket right answer. Also, there are many forms the first year or so of college could take, some of which would allow for greater scaffolding. Online, blended, community college, part-time scheduling come to mind.

And consider this recent article on parental scaffolding for typical age college students:

http://www.theatlantic.com/educatio...-colleges-and-helicopter-parents/482595/

...pronounced like the long vowel and first letter of the alphabet...