As a fellow high-schooler (coming on 20 years ago) I can relate to the kids just wanting to let off some steam. I mean what are you bitching about - they're just a couple of eggs.
Seriously, after consulting with family in law enforcement - if its a recurring problem - the best you can do is motion sensored lights and a camera. Good luck!
or:
http://www.tfproject.org/tfp/showthread.php?t=121842