The purpose of this paper is to clarify the composition of the teacher’s responsibility when an accident has occurred at a nursery school or a kindergarten. For this purpose, I analyzed 10 trials in this research. As a result, I could make the following points clearly. 1. Judgments don't always regard the quality of the nurture as the direct cause of the accident. 2. Judgments often judge the cause of the accident based on a general developmental structure.