A study examined the ability of master teachers to maintain the learning environment and those competencies by which they were awarded master teacher rating. The five subjects studied were physical education teachers who obtained their Master Teacher degree at West Virginia University during the 1982-83 school year and who had been evaluated for each of the next five years they remained employed as full-time teachers in the public schools of West Virginia. Subjects were evaluated with a student-teacher process behavior observation system. Results revealed a decline in both teacher competencies and in the learning environment, as inferred by student process behavior overtime. Examination of individual data showed that, after only two years, all but one subject failed to maintain master teacher competencies and appropriate student behavior levels. (Author/CB)