Assertive Discipline is an outgrowth of Canter and Associates' professional efforts in both working directly with children with behavior problems and consulting with teachers on how to deal effectively with such children. Assertive Discipline is an in-depth approach to classroom and school discipline. Lee and Marlene Canter first published "Assertive Discipline: A Take Charge Approach for Today's Educator" in 1976. Over the past decade, Canter and Associates have trained over 500,000 teachers in this competency-based approach to classroom management. Despite Assertive Discipline's popularity with teachers and its acceptance by school districts across the nation, there are educators who express concerns and doubts about the approach and its effectiveness. Some of those educators have asked the following questions: "Does Assertive Discipline have a sound research base?" and "Has Assertive Discipline been researched as to its effectiveness?" This article is intended to answer those questions. (Author/JD)