TechAPhi is right, once you make the commitment to an NPC sorority, you cannot join another. You have a couple choices. You can rush Phi Sigma Sigma and just go alum if your next college does not have a chapter. Or, you can check out the websites of the schools you think you're likely to attend later...and then try to rush a sorority at your current school which has a chapter at your next school (does that make sense?). Similarly, you should check out the Phi Sigma Sigma national website to see the list of their current chapters (and look to see if there's one at USC, UCLA, or Loyola).
One last thing, USC and UCLA both have strong greek systems, especially USC. I don't know about Loyola. Of course, when weighing the options, there is no choice....anybody who is a somebody would attend USC hands down.



Fight On!
......Kelly