<p>I find that there are 21 fraternity in USC,and I want to pledge one. So how should I choose? Is that different fraternity has different aims? How to choose one?</p>
<p>Attend rush. Learn firsthand.</p>
<p>During rush week you have a chance to go into each fraternity and see how they are. Then the next day you narrow down your choices and visit them against and they have activities and stuff. And then you narrow them down again the next day and so on…until bid night.</p>