It seems to be standard operating procedure for fraternities not to register parties at which they plan to commit or facilitate rape.

February 14, 2016

https://www.google.com/search?site=&source=hp&ei=WbbAVte-I8GvepC_upgF&q=brown+university+phi+kappa+psi+date+rape+drug+unregistered+party&oq=&gs_l=mobile-gws-hp.1.0.41l3.0.0.0.3808.1.1.0.0.0.0.343.343.3-1.1.0....0...1c..64.mobile-gws-hp..0.1.343.3.3znUjjh4XjU

That's the Web address for the first page of Google search results for a Google search from today of the term "brown university phi kappa psi date rape drug unregistered party."

At least two fraternities at one Ivy League school did not register parties in October, 2014.  

http://www.nbcnews.com/news/us-news/brown-university-two-fraternities-facilitated-sexual-misconduct-n289296

That's the Web address for an NBC article from January 19, 2015.  

Those are pictures from today of the first part of the NBC article.

Copyright, with noted exceptions, L. Kochman, February 14, 2016 @ 1:26 p.m.