This is pretty much only true for the state you live in. You would be considered out of state for other state universities (like in California), and tuition is much higher.
There are some colleges that grant in-state tuition to high stat students, but GPA is usually part of the calculation – but some schools will look at your weighted GPA.
University of Alabama is one school you should look at. Here is their page on scholarships (and their FAQs say if the unweighted and weighted GPAs are on your transcript, they will consider the higher one):
http://scholarships.ua.edu/types/out-of-state.html
There are schools where you can get 150% of in-state tuition via the WUE program:
But not all state schools within the participating states are included, so you have to dig into this website to see which schools participate.