1. Brief Sketch We have studied since 1959 under the theme : "A Study on the Formation and the Change of the Behavior Pattern in the Group." The project was supported by Grant for Scientific Research (Comprehensive Research) from the Edutation Ministry and has been conducted by several research groups. The study may be largely divided into two parts :the survey on the groups in education and in industry and the experimental research on formations and changes of the behavior pattern in the laboratory.This task paper presented as "The Behavior Pattern of Leaders in Education" is ah outcome of the above later research, We did not wish to title "TheBehavior Pattern of Teachers". It was because we are intending in our study to recognize a teacher as a group leader, because such an apprehension has previously been so infrequent as to be free from some confusions which may be caused by using. the word "teacher" , and also because our work in the present stage of experiments would not deal directly with teachers or the teaching profession.