Classroom Management

        I was in my education placement this week and there is a student teacher who is in the classroom I am in.  He has trouble controlling the class when their actual teacher leaves.  When the students throw pencils at each other and get up and chase each other around the room, he just yells at them.  This method is obviously not working for him.  But when he tries to implement different rules, the main teacher fights all his new strategies so he is back to square one.  I feel like this is a common situation for most student teachers.  Maybe he could talk to his teacher and see if she will allow him to do a community behavioral system.  He could possibly bring in a fish bowl, and when the class is good add stones to it, but if bad behavior occurs then the stones get taken out of it.  Once the bowl is filled to the top you can reward the class with a few extra minutes at recess, or bring in a small treat for everyone.  This way you are helping the students to encourage each other to behave, also the students learn that their actions affect others.  This allows your students to become more responsible for their actions.  I feel awful for this student teacher situation. What do you think about this situation?  Should he just carry out with chaos in the room? Or should he try and sit down with the teacher to make a plan they both agree on?