> Also at 17 18yoa you have not paid into the tax system, so that's irrelevant. I don't think it's irrelevant actually. I don't know if it's the main reason fo

> Also at 17 18yoa you have not paid into the tax system, so that's irrelevant. I don't think it's irrelevant actually. I don't know if it's the main reason for this policy, but I'd imagine you're far more likely to remain in the state if you have already lived here long enough for in state tuition. Because if you pick up your bags as soon as you're done with your education, you just drained the state some money.