"What should a beginning teacher know and be able to do? What should an experienced teacher know and be able to do?" "The decision about what content to include in The Act of Teaching was based on the answers to these questions. In developing this practical guide to effective teaching, the authors were guided by work done at the Educational Testing Service (ETS) to determine what a competent beginning teacher should know; and work done by the National Board for Professional Teaching Standards to determine what an experienced teacher should know."