But by that argument you'd have to ban all thumbtacks, staples, maybe even paperclips. And with regard to blood, all kids bleed - some pick scabs, some get nose bleeds, some fall, some accidentally poke themselves with a thumbtack. Kids are gross. They have all sorts of pathogens on their hands from picking and scratching and all sorts of unsanitary places. The notion that this a legitimate claim based on "some kids in schools have(ing) things like aids and stuff", is a red herring. How many kids in your school do you think have AIDS? And since AIDS isn't magically transmitted via air even a kid with full blown AIDS with bloody hands in the vicinity of other kids stands a zero chance of infecting anyone - besides, when did a simple bg check result in "bloody hands" anyway?