if your son has the goal of being a big league pitcher, then he should go to a school that has agood record of developing pitchers. He should look at coaching staff, level of competition, and playing time. Of these I would rank coaching staff most important. Does the coach have big league or minor league experience? What has been his track record in developing pitchers who have been drafted? Do players get better under his program or just get by on ability? How competitive is the program? Do they have a track record of achievement? Will your son get a chance to play as a freshman or do freshman either redshirt or sit in their first year?
I disagree with justafan that the stage is important. It is only important if you are redy to take advantage of it. Scouts will come to see you even if you are playing UMBC if they are interested in you.(no offense to UMBC)
Please also take time to look at the school. Not everyone makes the next level. Injuries, ability, and interest can change over the course of 3-4 years. Make sure to get as good an education as possible. Make sure you like the school even if you aren't playing!
Spend some time researching other schools and conferences. What other programs are you considering. High Point does not have the best track record for what you are seeking.