Basically it works out a few ways
Since the Jewish population is so big at our school, a lot of freshmen join the Hillel, and even the rabi hangs out with all of the greeks of PNM's. Jewish people are encouraged to join the only jewish groups. In the rush rooms girls first and last names are on their name tags so it usually pretty obvious. When I went through I most certainly had like every girl ask are you Jewish???? A lot of people actually brag about being "japs" and I am telling you the truth if you are not Jewish at my school you will have a limit to which houses you can chose from, even if your personality fits in better with a certain group say AEPhi, they basically automatically cut you. I also know first handedly of people who are in GLO's dating non Jewish people, and having the rabi being very upset about this. I think it is all fine and dandy to be religious, I just think to discriminate is unfair and I know my school's greek advisor has had several complaints in reference to this in the past couple years, bc for a while it was like if you are not Jewish you dont fit in or belong to a sorority.
By the way my father is Jewish.
But I just see the difference when the southern girls are worried about looks, personality etc, where up North from what I know here, it is all about religion, ok and maybe money