It exists now Genius. "You might want to delve a bit deep with the idea kids should be beating doors open in a fire."
You ever walk out of a building that has that bar you push to open it? The one located right where you intuitively push the door? The one where, even if folks were piled up trying to get out, something would very likely hit it and unlatch the door?
Most of those can be locked on the outside, pass through from the inside. They too, are old and common. I'd bet that school has some.
In your halluccination how does the magic lock system "They" should buy differ from the legacy mechanical locks that are supposed to be locked to the outside all the time?
Be specific as to the advantages.
You really should stick to things you think you know, and that sure ain't physical security. I'm not going to go into detail as to how what STX suggested is the answer to most of the problem (if you really want to know do some research) but he is right and the hold up is funding.
