I am trying to come up with my own discipline plan and I am stuck. My 6th period class is very talkative and they want to test me. You could give them five minutes at the end of class to start homework or to talk if they are good for the class. I find making the students respond is easier if they get a positive rather than a threat.
Many students are talkative at the end of the day.
It is a challenge to all. Hope this idea is some help.