Pre-institutionalized education
Pre-institutionalized education began with primitive social education in early human beings, and there was no formal system at this stage. In the later period of slave society, formal education (materialized education) gradually appeared. At this time, the embryonic form of the school has just appeared, but all aspects are still not perfect.
Institutionalized education
Institutionalized education means that school education has a formal system, which is also called formal education. At this stage, all aspects of the school are gradually improving, and there are clear regulations on what to study at school, how long to study, the standard of what to study, and the degree to which you can graduate. Moreover, the appearance of modern school system opened a new stage of institutionalized education. The symbol of the rise of modern institutionalized education in China was "abolishing the imperial examination and rejuvenating the school" in the late Qing Dynasty.
Non-institutionalized education
Education in the stage of non-institutionalized education advocates that "education should no longer be confined to the walls of schools." In other words, education should not be just education in the wall, and education needs a breakthrough, and the breakthrough at this stage not only focuses on the change of form, but also on the change of educational concept.