the pencil trick
if ur teacher doesn't lock the classrooms, then at lunch or recess when they r in the teacher's lounge, say u half to get somethin from ur locker. Once everyone leaves,sneak inside da classroom and search for all of their pens,pencils,and markers,or any thing to write with. After dat, hide all of the stuff into the one kid dat u don't like's desk. Then run outside and act casual.
spilled snack
does ur teacher keep liquids or foods in da classroom dat can spill all over? If they do, ur in luck! When u see ur teacher eating or drinking something on his/her desk, nows ur chance. Make an excuse so she/he can leave da room. When they leave, run up to their desk and find some important papers ur teacher was just working on. Take a blank piece of paper and trace ur teacher's thing she was working on. Make sure it looks exact! Then fast knock over the snack or drink onto ur copy of da paper. Put da real copy on her desk where they can see it if they tried. So, now u have a fake paper with yogurt spilled all over it. Run to ur seat and sit down super-de-duper fast. Now ur teacher will come in and freak out!!!!!!