Final answer:
Sorority girls at school played pranks on the candidates to create a sense of camaraderie and test their ability to handle unexpected situations.
Step-by-step explanation:
The sorority girls at school played pranks on the candidates as a way to mess with them. This could involve harmless pranks like hiding their belongings or more elaborate pranks like pretending to be someone else and setting up situations to embarrass the candidates. The purpose of these pranks was usually to create a sense of camaraderie and to test the candidates' ability to handle unexpected situations with grace and humor.