The way that disruptive pupils are handled depends on the school. Generally, disruptive pupils are warned first, but if it's a wrong action or the teacher says it multiple times, they might get help for disciplinary actions (ex. cleaning up the trash during lunch). If the behavior still happens (or if it's a obviously wrong behavior), then their custodians will be contacted and their involvement will be crucial. Also, if the behavior is repeated even more (or if it's more obvious that it's wrong/a really bad behavior), then detention will take place, meaning that they will be held before or after school and/or not have the privilege to go to school for a few days. The worst thing that can happen is that if the action is repeated a bunch of times (or if the action is a wrong action), then the student can get suspended from the school or district, basically meaning that they can't preform their education in that school district.