Sorority reps and hazing

I am a freshmen who is looking to rush in the spring and I was wondering what the reputations of the sororities on campus are? I was also wondering as to which sororities haze and which don't? I've been told that AGO, Clio, and Phi Lamb all haze and that AST doesn't but I haven't heard anything about the other sororities and I don't know if what I have heard is true. Thank you in advance!