&gt; <i>The school itself (this is K-5) has locks on all doors, you have to buzz in, or swipe a badge at any time of day.</i><p>&gt; <i>The technology is fairly inexpensive and if it helps with anything, then maybe it seems worth it.</i><p>I expect they realize that and solved this problem (I&#x27;m interested in knowing how), but one of the main thing that worries me with policies of locking everything up is fire safety. When you have a building with many people, there should always be a path from any point outside to the evacuation area that has as little obstructions as possible (preferably zero, but that&#x27;s not always applicable - e.g. areas handling classified information or dangerous objects). I always cringe when I see locked doors on evacuation path - with a panicking crowd, it&#x27;s a disaster waiting to happen.