Abstract
This paper is based on the participant observation and interviews with the teachers of an Elementary School and tries to clarify characteristics of school based In-Service Teacher Training (INSET) in the 1997-98 academic year. According to the Case Study, this paper attempts to examine the validity and possibility of the Ethnography in Educational Research. First, According to research materials, this paper clarified the characteristics of INSET. 1 The teachers in INSET reflect their teaching practice and its effectiveness from the viewpoint of pupils' products of Learning. After all, they show personal Leadership in response to the learning of students flexibly. 2 The teachers in INSET shared the common teacher's beliefs. Their Beliefs are composed of a sense of mission, "More Effective Learning of pupils development through the professional development". 3 The teachers in INSET accept each other as significant others. Because they think that they can facilitate their professional development as a teacher only thorough critique among them as to their teaching practice. Secondly, The advantages of ethnography to the school study are as follows. 1 The Ethnography can describe emic of the exactly. 2 The Ethnography can urge to check the validity of empirical inquiry. 3 The Ethnography can offer a resource of hypotheses for empirical inquiries. Finally, The Ethnograpy can create flexible wisdom so that it can cope with school's problems through the implication of teachers collegiality.
