You walk into the Charms Classroom and see nothing on the board. There are various quills scattered everywhere and bottles of unlabeled ink. They're on the floor, stuck to the walls (using the sticking charm, no doubt), hanging off of strings from the ceiling, and on the desks. There are even some floating in mid-air!

Ashby is sitting on his desk dangling his feet over the front and swinging them back and forth. Typical.