Xypathos, do you know anything else about becoming an NC resident for tuition? I was born and grew up here, but we moved away when I was a 10 or so. I moved back here (for good) the first week of January '06 and have a NC drivers license, vehicle registered here, bank account, registered to vote, all belongings here, etc, but I haven't had a job here (lived off of savings) and when I went back to visit family in Indiana (4 times) I worked for my dad's company to pay for the trip and to have a little extra. Since you seem to have a little bit of experience in this area, do you have an idea of how this might look to UNC or NC State?
I honestly don't know in your case. NC preference is 1 year, which you almost meet but not exactly. You were also here for the first 10 years of your life.
Were you born here? If so, that'll help.
You do have all of the other requirements though as far as license, vehicle, bank, etc.
Generally speaking, they MAY classify you as OOS but when they do you can request a Residency Classification Form from the college (most include it if they classify you as OOS just in case anyway). You'll fill this out and provide information on yourself such as bank accounts in NC, registered to vote, vehicle registration, if you were born, how long through your entire life have you lived in NC (If you're under 20 that means more than 50% in your case, which will be a huge boost), etc
They also ask if you're still a dependent of your parents and if so, are they living and working in NC --- if they are, odds are they'll classify you as an NC resident automatically. If not, they base their decision on your other information.
What you can do, as I did in my case, is attach a sheet that explains your situation and that you've moved back and have claimed NC as your homestate and have no desire to leave and maintain residency in another state.
It's a long process --- the paperwork in question is like 5-8 pages long and goes over the past 5-10 years of your life. It's a hassle and a pain in the butt but if it works in your favor, it'll save you thousands of dollars.