What is what does written up mean in school?

When a student is "written up" in school, it usually refers to an official disciplinary action taken by a teacher or administrator. It could be for breaking school rules or disruptive behavior in the classroom. The written document will typically describe the infraction and the consequences, which could range from a warning to detention or suspension. The written record may also be used as evidence if the situation escalates into further disciplinary action or legal proceedings.