As long as the age is up, it will be fine. The task of kindergarten is to remove the constraints of time, space and environment when the family is cultivating children, so that the children can develop physically, intellectually and emotionally healthily. It can be said that kindergarten is a happy world for children, which can help children spend their childhood healthily and happily, not only to learn knowledge, but also to get in touch with collective life from childhood. As the foundation of the whole education system, kindergarten education is the preparatory education for children (complete and healthy personality, good behavior habits and preliminary natural and social common sense). There is no obvious distinction between its educational courses, which are probably composed of five fields and various activities, such as language, science, art, health and society. The integration of various fields determines the teaching content.

Classes organized by younger children in kindergartens according to age (as opposed to middle classes and large classes) are generally children aged 3 (or 4) to 5, with 20 to 25 students in each class.