The document discusses effective classroom management systems and practices. It outlines common challenges with classroom management like being informal, reactive, and disconnected from school-wide systems. Formalizing classroom management can maximize academic achievement, social success, and effective teaching. Guiding principles include applying a three-tiered prevention model and remembering that good teaching is one of the best behavior management tools. Key elements of classroom management systems include instructional management, environmental management, and proactive behavior management supported by school-wide systems and data-driven decision making.