Assertive iscipline is an approach to classroom management developed by Lee and Marlene Canter. It involves a high level of teacher control in the class. It is also called the "take-control" approach to teaching, as the teacher controls their classroom in a firm but positive manner. The approach maintains that teachers must establish rules and directions that clearly define the limits of acceptable and unacceptable student behavior, teach these rules and directions, and ask for assistance from parents and/or administrators when support is needed in handling the behavior of students