The question of whether there is such a thing as teachable justified anger encompasses three distinct questions: (1) the psychological question of whether the emotions in general, and anger in particular, are regulatable; (2) the moral question of whether anger can ever be morally justified; and (3) the educational question of whether we have any sound methods at our disposal for teaching justified anger. In this paper I weave Aristotelian responses to those questions together with insights from the current psychology literature on emotion regulation and conclude that there is no good reason for teachers of moral education to shy away from the teaching of justified anger in the classroom, via various means and methods.