It's very difficult. They only consider out-of-state applications from residents of the eight states that border Tennessee or from children of UT alumni that live out of state. Plus, only 10% of each entering class can be non-residents.
I interviewed out of state last year and was waitlisted. I interviewed again this year, except as a reapplicant they give you one interview w/ a senior member of the committee. He said if I were a TN resident I would most likely have gotten in last year, but there's just not much room for out-of-staters.. He was honest though and said I'd prolly get waitlisted again this year, but I'd have a better chance of getting "the call" this time around. That was several months ago now and they haven't let me know one way or the other, lol.. Oh well.. Seems like a great school for 3rd and 4th years, but not much chance of getting in out of state if you don't have some sort of tie to the school.