I would feel pretty uncomfortable if I found out my teacher had a gun on him
Based on the safes that Lockpickinglawyer has reviewed, it could be locked away and still take no time at all for a kid to fumble the lock open
Not wrong. A handful of my classmates (me included) taught ourselves to lockpick. Not out of any malice, but just due to wanting to learn a skill. Lockpicking is not hard, as long as a person is willing to learn. And that's completely ignoring the fact that basically everyone knows how to shiv a lock open with a card