I don't quite understand your point. At any rate, in my experience, I only encountered two surveillance cameras that were privately owned by tech-savvy teachers, there was usually one (sometimes two) 'SRO' (school resource officer), a police officer assigned to the campus, and we were almost always supervised by adults. Graham's hypothesis is plausible even given poor supervision. The only requirements are 1) adults and children not being invested in the ostensible purpose of the educational system and 2a) the presence of obstacles to refusing to participate in or 2b) reforming the educational system.