i don't necessarily think all schools, particularly suburban or more rural schools need to go that far as it seems they are more in danger from outside sources rather than students themselves. with that said, that model seems to work very well in more crowded, and potentially more gang infested innercity schools. i am in favor of at least an armed security guard with at least a wand, so that way EVERYBODY who enters the school is subject to a quick check. it just seems to me that having to be "buzzed" in isn't sufficient enough, as once you are inside all bets are off. the guard also doesn't have to open carry his weapon, it could be concealed inside the waistband to help prevent unnecesaarly worry on the students part.