I 'm a new guest teacher. I'm 63 y/o grandmother and have no trouble taking charge of my 14 grandchildren, BUT, I had a class of 4th grade boys that kicked my behind today! I tried rewarding them with school bucks for good behavior, taking it away for bad behavior, giving them a check mark and a report to their regular teacher. I even had an assistant for the afternoon who assigned them laps at recess tomorrow. They yelled, wouldn't stay in their seats, horse play, you name it. I was really mad at myself for not being able to get them in control. Ideas please!!