saw this yesterday as well - very interesting movie. it starts out like a horrible piece a poo movie - then quickly changes into a sharp comedy, then revenge then drama...

the first 3/4 of the movie is funny - very smart dialog.
FYI - do not watch this with your kids / parents. it'll make you uncomfortable.

also - James Woods is bloodie fantastic in his small role as the girls father.

here is what amazon had to say about the plot :
Manipulative high school sophomore Kimberly Joyce leads her friends Brittany Wells and Randa Azzouni in bringing charges of sexual assault against Percy Anderson, their English and drama teacher at an exclusive private school in Beverly Hills. Meanwhile, local reporter Emily Klein, originally assigned to do an insignificant piece on the school, hopes that the scandal will launch her into celebrity in the television news business, while Kimberly's bigoted father, Hank, is concerned primarily with the effect that his daughter's accusations may have on his business.

Quoted: Amazon.com: Pretty Persuasion: DVD