Before we add a clip to ClassHook, we’ll send it to you for review. If you believe the clip has educational merit after reviewing it, we’ll add it to our library. You will be sent only clips that cover the subjects you teach, which you've specified on your profile. So if you’re a Physics teacher, you will be sent clips about thermodynamics, motion, and all of that fun stuff. And if you’re an English teacher, you’ll be sent clips relating to literary devices, grammar, and all of that other equally-fun stuff.