This isn’t something you see much of with government schooled kids.
We need more home-schooling. Keep government out of schools
While I can’t think of a legal reason for her not to go to college, I really don’t think it’s a very good idea. Regardless of her intelligence, there is still a lot of emotional development that happens between 13 and 18. However, the parents should be the ones to decide. I know that a lot of colleges have postsecondary kids in there and they are usually around 16 or 17, so I’m not sure what the college’s big beef is (I didn’t read the full story though).
My daughter is 9 and we just got the results of her achievement tests. She is scoring post high school in most subjects. But then, we have her in a private Christian school.