As you know, we switch classes in fourth grade. Therefore, your desk will not just be yours. If you leave something in the desk (even at the end of the day), it might not be there when you come back. So, take all your stuff out of the desk every time. The only things that should stay in the desks all the time are my whiteboards, reference sheet, composition books, and black bags. Also be very careful with your cubbies. Please make sure you are taking home the correct textbooks each and every time. The white tables at each group are not to be sat on. Ever. Seriously, you sit on them or lean across them with your body weight, and they'll break.