The expert teacher action program is to improve classroom teaching performance. The program has been tested in workshop sessions involving more than 1,200 educators representing 50 school districts. A set of standards, consisting of 25 variables, lead to the definition of expert teaching. Each variable deals with a major aspect of the duties of the professional teacher. The book details procedures for becoming a skilled observer of classroom actions and conditions. It then explores methods of evaluating observations on the basis of the variables. School administrators who have participated in the program have gained new awareness of the performance of the expert teacher enabling them to give greater support to the classroom teacher. Student teachers are given the opportunity to differentiate between the degrees of importance of classroom actions. The program also includes a self-evaluation guide for teachers. Teachers and administrators who have participated in the program have developed a high degree of proficiency in evaluating classroom actions. More significantly, they have increased their proficiency in self-evaluation, which is invaluable to the professional growth of a career teacher. Appendixes contain detailed material used in the program, including the self-training program for in-service teachers, film observation practice score sheet, and classroom observation practice score sheet. (Author/MJM)