This document discusses classroom management strategies and the appropriate use of punishment. It defines punishment as an aversive stimulus that decreases the likelihood of a behavior occurring again. Side effects of punishment are described, including worsening of the punished behavior when the punisher leaves and potential for new problem behaviors. Positive approaches to management are recommended over punishment, including defining expectations, modifying the classroom context, and using reinforcement for good behavior. Guidelines for the appropriate use of timeout as a punishment technique are provided.