Chastity Church is the girl everyone at school wants to be: Head cheerleader, drop dead gorgeous and the most popular girl at Padua High. Her image of power and perfection is furthered by dating, Joey Donner, her football player/wanna-be model boyfriend, who though frustratingly dimwitted (and useless) is still good looking enough to be on her arm. And apparently in her pants as well as noted by Chasity when bragging to her fellow cheerleaders.
Chastity's a girl with a purpose in school, to be powerful, and with that comes a natural mean streak that disaplays itself when dealing with her fellow cheerleaders. She can also display a charming, suck-up attitude when needed (as with Principal Holland) that usually achieves her objective's just as well.