This paper analyzes the processes in the classroom, in which the teacher's evaluation affects pupils' involvement in various activities at school. In this paper, I aim to understand social meanings of evaluation in the classroom. In so doing, I hope to shed new light on the sociology of school.Based on ethnographic research conducted at an elementary school, I found the following:1) Among pupils, their recognition of teacher's evaluation is differentiated, because evaluation in the classroom is getting multifarious and the criteria of report cards are not open to pupils.2) Patterns of pupils' reaction to the teacher's evaluation are differentiated based on both “pupils' recognition” and “grades on test”. Differentiation of pupils' reaction to evaluation is a result of pupils' strategies, based on their own recognition, for making difference and getting a respectable position in the classroom. For example, lowly-graded pupils recognize their teacher's evaluation in everyday life positively and react to it accordingly. Through such strategies in dealing with teacher's evaluation, pupils make their own positions in the classroom as a social space.3) Pupils' involvement in school activities is differentiated, depending on patterns of their reaction to the teacher's evaluation.As is discussed above, the process of evaluation in the classroom is a social interaction process. Lastly, I suggest that this process makes various patterns of pupils' adjustment to school, and on the other hand it can cause a part of “self-selection”.