No one has mentioned this yet. During class, steal her phone, change contacts and shit. If she has internet you get bonus points. Change facebook password and start fucking with it, set the SMS updates to your phone number text it things like "I'M A HUGE SLUT. LET'S BANG" and do this randomly. But if you do the statuses, don't change contacts or change password. Make it very discreet. Also, *67 her randomly, and ask her questions, and tell her you're wacthing her. You could also cut small pieces of hair off every day. Just little amounts. Till you got like 4 inches and she's totally fucked. Or, if you have a camera phone get an upskirt shot and print it out then post it everywhere in the school. Sorry that your backpack got fucked with.