These cupcakes earn top marks for sweetening even the most reluctant student's return to school.
Cover the cupcakes with yellow frosting and allow them to sit for an hour before decorating. Dab each red Skittle or M&M with a bit of green frosting for the apple's leaf, then set them aside.
Put a tablespoon or two of white frosting into a small plastic bag for piping. Cut a very small hole in a corner of the bag, twist the top of the bag closed, and secure it with a rubber band or twist tie. Piping the frosting gently out of the hole, write messages on the chocolate-covered graham crackers. Leave space at the bottom of the cookie, where it'll be stuck into the cupcake.
Cut a groove in the cupcake's frosting with a knife, then fit a blackboard into the groove. Add one Skittle or M&M apple and a piece of Good & Plenty chalk, as shown.