True. Camera boxes were install in school buses but in reality there were only two actual cameras that rotated between thirty buses. The threat of use and a couple of kids caught in action were all that was needed to improve ALL bus behavior.
C-Span was supposed to have the same effect.
But the kiddies soon found out that the cameras were only on the Floor, so they let the usual trouble makers do their usual antics for the cameras, while the real shennanigans are going on quietly out of camera shot.