Angela has always been a troublemaker, but she is still shocked when her parents decide to send her away to a boarding school that is run like a prison. It's evil there--horrible psychologists, bullying, and hazing. The girls know that other girls are dying, and decide they must take over the school. Their parents are believing them, so they must get video evidence of the destruction around them.
The book is very anti-adult and pro-bad girl with good intentions--just the type of book I was reading when I was 12 or 13. :)