This is just my opinion, but having lived through SL hell recently, might I suggest that you try to come up with a solution for your child that would NOT include SLs. I mean, obviously there are some situations where it can't be avoided, but as many here can attest, most kids are not financially responsible when they undertake what can be an unbelievable amount of debt. It leads to a LOT of trouble, and personally, I think it's a great disservice to a young person to come out of school with a pile of debt larger than some home loans (and with private school loans, that is certainly possible).
So, I am putting away whatever money I can afford for my kids' education after HS. It may not get them all the way there, but it will be a good head start. Consider the IRAs and other ways to save money, but IMHO, it's not fair to expect your child to pay for their own education entirely on their own with student loans. As one poster said, the amount one can get right now doesn't entirely cover the cost of a year anyway, but more importantly, give your child every opportunity to come out of school debt free if at all possible.
It's just my two cents, so take it as you like.