Each chapter of a national sorority has its own personality. There are some "art schools that have fairly strong greek life on the campus" ie Pratt Institute in NY".
If you are interested in starting an NPC group ahead and do it. There is nothing wrong with having a group of women who love art and do social events together that involve art but are still part of an NPC group.
Talk to your student life office about reaching out to npc...
www.npcwomen.org they will help you get the ball rolling. Good Luck!