Since 1975, more than 400 teachers have successfully completed workshops at the University of Lethbridge (Canada) on the application of clinical supervision methods in the supervision of student teachers. Over 100 of these teachers, all of whom had supervised at least 3 student teachers, responded to a questionnaire requesting information on the effectiveness of the workshop material. The teachers overwhelmingly reported that the workshop was "valuable" or "extremely valuable." Their tendency to reply positively was unaffected by either the number of students they had supervised or the number of years that had passed since they had taken the workshop. The teachers tended to use the complete supervisory cycle taught in the workshop more frequently when dealing with advanced students, and very few had never used it. The teachers were more eager to work with student teachers after the workshop than before it, felt that their supervisory skills had improved from the "adequate to poor" range to the "better than adequate to excellent" range, and felt much more comfortable as supervisors following the workshop. A copy of the questionnaire is appended. (PGD)