You've seen them. Clear plastic on a hinge. Red lettering that says, Pull for Fire. Only these are equipped with a trigger that zaps the pullee with indelible dye so his hands will be a sign that says, I pulled it. For a while, everything settles into conformity.
Teachers go on with their teacher things.
Some try to teach. Some of the students try to learn. After three days it starts again. Fire erases the curriculum. Burns it down.