Answer: I believe teachers and staff should keep armory (a gun) on them to defend them and the students. In advance, more schools should be provided with a better safety system such as locks on the doors, bullet proof windows, and walk in censors to ensure that no one is smuggling anything illegal. I would go so bold as to even recommend they include drug sniffing trained dogs. Overall I believe it would be safer if many more schools added security systems with card scanners on doors and other things that only the staff and other teachers have access to with teacher ID.
Explanation: Often on the news, we hear about school shootings that occur with students or teachers getting injured/dying. It is time to put an end to it, and time to protect teachers and students K-12 in the communities.