班级中的“工具性”角色是指为完成班级工作而服务的角色。在我国中小学，班级组织中有三种“工具性”角色：班一级干部、小组长、一般成员，前两种统称为班干。担任“干部角色”的只是班级中的少数成员，大部分学生是“群众角色”。大量的实践经验与调查表明，和成人社会中的 The “instrumental” role in the class is the role that serves to complete the work of the class. In China’s primary and secondary schools, there are three “instrumental” roles in class organizations: class leaders, team leaders, and general members. The former two are collectively referred to as class leaders. The role of “cadre” is only a minority of the class, and most of the students are “the role of the masses”. A lot of practical experience and surveys have shown that in adult society