I was thinking about rushing the fall semester. I've began looking at a few of the sororities that the university (FIU) i attend offer, but I'm still having trouble deciding and i have some general greek life questions.. First off, i attened community college for a year and im coming in as a sophmore transfer student. do you have to be a freshman to rush? Also, does Beta Theta Pi have a sister sorority? Or actually how do "sister/brother" work?

I'm a little confused on all this, and when i go to greek life on the university's website, its a little less than helpful answering these particular questions. If anyone can help, please do!!!
Thanks!!