Feel free to look at my previous posts for an intro to what's going on. I started a cover supervisor job at a secondary in November. I am handling some classes better than I was before, but now some classes have started misbehaving even more for me. Some classes ignore me as the adult in the room and classes descend into chaos, especially at the start when I am trying to get them to settle down and be silent for the register etc. For example today I was covering an English lesson and students were supposed to be reading aloud, one student at a time. Groups of students were talking over them, ignoring the person reading. When I was trying to get the class to be silent I was still being ignored. I did not sanction this because I did not know the names of the students and there were too many of them. I emailed the SLT.. TWICE. They did not come. No support given when I most needed it. This class will be even worse for me next. Things like this are happening a lot lately. I feel my presence has gone. I am thinking of speaking to my line manager and tell him that I am struggling, but will they see this as weakness? I have tried everything, behavior management books, changing my approach, giving out more sanctions. Not working with some classes I'm afraid. I feel miserable.