My mom was in ESA when I was a kid. She went to nursing school, so she was not in a collegiate sorority, but she enjoyed ESA membership for many years in her 20's and 30's. In fact, there were a couple of different chapters in our small rural area and it was quite popular. I think at least one chapter is still going strong.
I was not aware there were collegiate chapters--I hope there is somebody here who has experience and some advice for you.