Abstract
In Japanese nursery school, there is no standard of a capacity of two-year-old children's class which can be seen in many foreign countries. In the existing circumstances, many classes respectively have a large capacity of 20 or 30. In this study, in relation to the capacities of classes which are most important when a nursery room is planned, they are divided into the three conditions, that is, a capacity of 12, that of 15, and that of 20, and in each condition the experimental care is taken. After this, the influence on the two-year-old children and the nurse staffs is investigated and the suitable capacity is considered. As the result bf this, the following two points are confirmed. 1 When a class has a capacity of 20, it becomes very much remarkable that the children play in a group less frequently. 2 In the same case, the nurse staffs feel more fatigued. Accordingly, it becomes clear that the capacity of less than 20 in a class is suitable.
