I have a class in which they are made to leave the classroom EVERY DAY and practice entering again, because they are not prepared by the time the bell rings. They KNOW they should be in their seats with their kick-offs out and it should be silent. All my other periods have it down pat, but there are a large number of problem kids in this period, who don't care and may even enjoy forcing the entire class to leave the room and ruin it for everyone else. They KNOW I mean business too. I am consistent and firm with them everyday, and they receive their consequences as they are due. I don't really have any ideas at this point about how to deal with it. Well I do have one idea, and that is using PAT. I am planning on implementing it in our class and providing bonus minutes if everyone is sitting in their seats and ready to go by the bell, but is there anything else that I can do to solve this problem? I could feel myself beginning to lose my cool (and I NEVER lose my cool - I'm basically Queen Victoria [yes a male teacher imagining himself as Queen Victoria] as Fred Jones describes, but my patience wore very thin today).