Flexibility is not a prescriptive or even a very helpful concept. Research on group process has not taught conclusively what is the best practice. In the writer's opinion the certain points are (a) any singular method, e.g., lecturing, reciting, attitude reflecting, or reading is not effective by itself; (b) the teacher's knowledge of subject matter alone is insufficient; (c) singular attitudes, e.g., acceptance, do not alone describe the complex variables comprising the teacher's roles and task; (d) classes demand flexible alteration of the teacher's behavior if the locus of responsibility for action is gradually placed within the group itself. </jats:p