Every teacher has struggled at one point or another with classroom control. In this particular situation, it seems as if even the well-behaved students get in on the action, and the class as a whole is quite successful in driving the teacher nuts. When a teacher goes home after dealing with a wild class, he or she feels like doing very little apart from going to sleep and forgetting the day. Such days do not have to exist if you just get control of the situation. Once you have control of your classroom, you will feel much better and go home smiling at the end of the day.
Classroom management is not that difficult as long as a teacher asserts his/her authority from day one, and then, the class should know who is in control.