There are various sororities that have a plethora of chapters, that are not recognized by Panhel. Most of these are special intrest sororities, such as engineering or agricultural sororities. The reason why they cannot obtain national panhellenic status is due to the fact that they discriminate on the basis of academic intrests (correct me if I'm wrong); a poli sci major could not join Ceres because although it is social, it is mainly for agricultural students. That does not mean that it isn't nationally known.
Addidtionally, there are smaller "local sororities" that have dozens of chapters, but have not been able to obtain panhell standing. From what I hear, it is very difficult to do so. I hope that this might have cleared up any confusion.
|