Once a troublemaker, always a troublemaker? There's a folder in Principal Kelling's office that's as thick as a phonebook and it's growing daily. It's filled with the incident reports of every time Clayton Hensley broke the rules. There's the minor stuff like running in the hallways and not being where he was suppose to be when he was supposed to be there. But then there are also reports that show Clay's own brand of troublemaking, like...