Throw chalk at your teacher and dodge what he throws at you as well.
Get chalk from your "buddy" and throw it at your teacher.; Left/right arrow keys - Move. Space - throw chalk.
Balance on the keg for as long as you can.
Jet ski your way to points.
Remain hidden by avoiding Mad-Eye Moody's gaze and his Dark detectors. You'll also need to avoid the creatures he controls using the Imperius curse. The longer you remain undetected, the more points you earn! You'll gain extra points for picking up special items in his classroom.