You walk over to the window. It's open just a crack. Too small for a person to fit through, but maybe the cupcakes were passed out this way? You look down at the dirt patch outside the window. You see large, clear footprints in the mud. They are not sneakers; they are hard, round shoe prints, maybe boots. And they lead away from the classroom. The hard, round shoe prints look like the kind the custodial staff wears, or maybe even the principal. What do you do next?