They should put electronic locks in schools so that any teacher or administrator can push a button and lock every door at the same time.
So who exactly is the "They" in your post?
Do the schools in your area have such a system?
Have you thought through any downsides besides the cost of such a system?
What happens in a fire?
The schools/ school district. There will always be downsides to any solution.
Only you would lock the doors during a fire.
God bless Texas----------------------- Old 300 I will remain what i am until the day I die- A HUNTER......Sitting Bull Its not how you pick the booger.. but where you put it !! Roger V Hunter