And "hardening" public schools might make it more difficult for parents to find out what they are teaching, and what the textbooks contain. They keep trying to put "climate change" propaganda into math lessons etc. etc.
Localities have the power, guaranteed by the Constitution, to implement the steps they deem necessary to protect schools. It's long past time to harden schools against maniacs. It's up to us...
Disarming lawful citizens, for whatever reason, would be a giant step toward the destruction of the Constitution and the freedoms it protects.