We can install one less surveillance head.
Campus security, many of them do this. Because the funds approved by the Education Bureau may not be enough, I don't want to post money from my own small vault, so I have to meet the unified requirements!
If there is a big personal safety problem in your school, or something strange happens, and the principal believes it, it's hard to say.
Learn knowledge with peace of mind, because you will graduate sooner or later.
Classmate ~ you have a little heart!