I did a class where I saw a Teacher do the class before I was to start. It was a Free for all, students running, talking trash, climbing on chairs, slamming cabinet doors etc. I could tell, this was going to be a headache day. The Teacher left a note saying that the class had been given a lecture and that I had permission to write them up or send the students to the office. (This is High School) I am glad that I had permission to do that (Write them up) as there were a couple students that I would have sent to the office, except for the fact that the office people were gone to lunch. So, I had to make do with writing a lot of names down.