Are you smarter than a Kindergartener?

Last night as I was gathering all the things for school this morning, I noticed Joshua's backpack was heavier than I thought it should be. I opened the pocket and there was nothing in it, then I opened the front pocket and found he had been bringing papers home and not taking them out. As I went through them I noticed one of them with the stamp 'Please sign and Return' and out beside it was his name. I asked him this morning why he had signed it and he replied "It says 'Please sign and Return!' We had a quick lesson that is for Moms and Dads to sign not the student.