[33girl]

Also, there are schools where even if there is a large percentage of Greeks, the environment is much more laid back than at a more "rah rah" (for lack of a better word) school. Really, it all depends on the campus and I don't think NPC or NIC would ever say "this school is too small to have Greeks."

Try looking at some of the school ranking sites and see what people say about the Greek system. If there are many strong opinions about it, pro and con, it's probably a pretty prevalent presence...if no one really talks about it, it's unlikely that Greeks "run" the campus. But there are always going to be people, even at schools with the weakest of Greek systems, who criticize Greeks for running things and being snobby. You can't win with haters like that.