My cooperating teacher had this DOWN PAT. She had a rolling cabinet with ten drawers, with five different colors, two drawers per color. Each class knew their color (to the point I still think think of the students by Red Class, Green Class, etc) and knew assignments had to go into that color top drawer. Any assignments not marked with a name stayed in that drawer, untouched, until the student took ownership of it by signing it. Graded assignments would always be in the bottom drawer at the beginning of each class to be handed out by the teacher (so students couldn't take each other's work). This is what I'm talking about.