A study was conducted to develop and test a method for describing, in a systematic and quantifiable fashion, the nature of the interaction that takes place between a supervisor (e.g., principal or helping teacher) and a teacher. Tape recordings of 50 supervisor-teacher conferences were collected. They were analyzed by use of a 15-category interaction system developed by Blumberg using behavioral categories developed by Flanders and Bales. The 50 recordings were tallied and transferred to individual matrixes and a composite matrix producing data which was analyzed by several methods, e.g., percentage comparisons of various combinations of column totals and area analyses to identify extended use of particular kinds of behavior. The resultant data gave rise to a number of questions about the nature of supervisor-teacher interaction, problemsolving styles of supervisors, the productivity of supervision, and the assumptions that underly it. It was concluded that the methodology carries with it the seeds of a training for supervisor behavior change. (Included are description of the 15 Categories for Analyzing Supervisor Teacher Interaction, explanation of the methods of data analysis, and the general findings of this 50-conference analysis.) (JS)