Panhellenic sororities (NPC) at MIT will vote December 5 on whether to move recruitment to the fall. The November 29 student paper has an article giving several viewpoints on the pros and cons of fall versus deferred recruitment.
http://www-tech.mit.edu/V125/N57/57panhel.html
Near the end of the article, some IFC concerns are mentioned. Apparently some guys are worried that if NPC and IFC recruitment occur at the same time, it will affect "rush-girl programs at fraternities . . . ."