I’m in NC and have visited both schools. Definitely saw more black kids at Guilford although it is majority white. I think two of our tour guides at Guilford were black males.
Will he have a car? Both schools are a little removed from shops and restaurants and stuff although there are a few you can get to by foot, but not the most fun part of either town.
Greensboro is a much more diverse city than Asheville. Much higher black population overall. I believe is a non-white majority city. There are more whites than any other group, but the other groups put together are greater than the white population.
Does he have any idea what he wants to major in?