text: what is the law in public schools in using a locked room for disipline?   public schools are subjected to state and local laws, so they may be different from state to state, local to local...  in the case of a student being displined by being placed in a locked room, that would depnd on a number of things i suppose.  - was the student supervised or alone? - what precautions were taking in the case of an emergency (medical, fire, etc.) - was the environemnt hospitible (not hot, poorly ventilated or dark)  depending on your answers, the school may or may not be subject to punititive sanctions if they put children at risk, irrespective of the reasons. but in and of itself, a locked door doesn't necessarily mean the school's administration did anything illegal.  if you're still concerened, you should ask the district to provide a copy of a written policy for disciplining student. this then would allow you to see if they're following their own rules.