Lots of good ideas in this section. I know I have had at least one of these students in my classroom environment.

When I have really talkative students I will find a different activity for them to do in the kitchen. This lets them know that I am keeping an eye on them and they need to be on their best behavior

I set my expectations on day 1 in my class. In this module that is the correct way to do it. Since I teach a professional trade class, they need to be on time,in full uniform, have all assignments done on time, work as a team and in a professional way. If there are any issues I address it right away. I do find that yes there is 10% of students who would take the zero instead of taking a better grade.