is that state or private?
you pay tuition, and housing if you live on campus.
you also have to pay for books... that's maybe 1000 per year.
hidden costs would be things that you need to move out of home. if you need to rent a refrigerator, an extra desk lamp, new computer or printer if you need it. all the stuff you have at home but won't always have. there's also if you need parking, that's nearly 200 a quarter here.
urm there's also extra food costs. and going out costs. stuff like that