Since your son is will presumably be a full-time student at SDSM&T, he will have resident status, while maintaining resident status in whatever state he is coming from. There is excellent hunting in that area for whitetails, mule deer, antelope, grouse if you want to drive a little, as well as elk and prairie dogs. I'm a former South Dakota resident but never hunted the Black Hills area, the farthest West we came was just on the west side of the Missouri. I wish him luck, there should be plenty of public ground to cover thanks to SD's Walk-In Area program, look it up!
Selmer