USC spring admit/extension program

<p>So my friends and i got into UC Berkeley but my friends got accepted for the spring semester - and yet Berkeley has an extension program that still basically allows spring admit students to attend Berkeley (but not technically) during the fall.</p>

<p>I got into the spring semester for USC, the college that I want to go to. Does anyone know if USC has an extension program type thing similar to berkeley that allows students to go in the fall as well? Because I really don't wanna miss out on the fall season.</p>

<p>Also I was thinking about trying out for a certain program at USC. However, if I were to take all the classes required and did not manage to get into the program what am i supposed to do? Just change majors? I do have a backup major however i'll have taken classes for a completely different major if i fail and decide to switch to my backup major.</p>