This has been happening for some time: rather than remove the violent student--who we cannot touch--the entire class must vacate their classroom. And their learning, of course. Sometimes several times a week, sometimes for up to thirty minutes+ at a time. This is the direct repercussions of EVERYONE overreacting to the very few REALLY BAD teachers who are out there. So because a few really bad teachers have horribly abused or restrained their students, we cannot stop a student physically from completely destroying a classroom. We must stand by and watch until he/she has burned out their rage. And the teacher shortage continues apace.