While I'm not for certain that Alpha Sigma Tau limited it's membership to teachers only from the beginning, we were a member of the Association for Education Sororities and not Panhellenic (when NPC was first formed). Therefore, women could hold membership in an AES group and a NPC group at the same time. ( I remember learning that TriSigma and ASA were AES sororities as well, but I'm not positive on ZTA.)
And EagleChick has already posted our founders!!
