I personally was one of the people who was supplying new proxies to students at the school, and they went after me taking away my ability to connect to the internet using my login for the remaining years of my high school experience. I eventually had to use other peoples logins (with their permission of course) to be able to continue using the computers at the school.
All this is to say, if you try to create a surveillance system at any given school, kids will find a way to not engage with it or fight back if they are able. People in the discussion below aren't giving the kids enough credit to stand up for themselves.