I have several classes most of which I manage well in terms of behaviour management. However I have a low ability year 10 class that are running absolute rings round me. The class is split 50 50 between those who are suffering from my poor behaviour management and those who are making the most of it. I try waiting for silence, moving students, keeping the whole class back. However I am achieving nothing and if anything they are getting worse. I overheard them talking in the corridor and they were saying things like we'll do what ever we like. Any advice is greatfully recieved.