I am an alumni of a local sorority, Kappa Gamma Chi. At one time, in the early 1900s there were three KRXs (two in New England and one in Ohio). I know one went national, and I believe the other closed. Our chapter is the only KRX left and we have been local for 100 years now. So I think it safe to say were going to stay local
Not that there is anything wrong with national, but we have been strong as a local for this long, so why change it.
