As we all are aware school's are Gun-Free Zones, also known as a great place to shoot people. So much so that there is a market for bulletproof backpacks as mentioned on Wes' blog.
Larry Elder has written an article on DGU's, or Defensive Gun Uses, at schools. A good reference and an even better idea. Let's get some people inside the schools that are both willing AND able to defend the kids from psychos.