Three-year or four-year system. Universities are divided into undergraduate and junior colleges. The undergraduate course is generally four years, that is to say, you can graduate after four years, and the junior college is generally three years, that is, you can graduate after three years.

In the process of the formation of modern education system, the school education system is the first to be formed and perfected, and the initial education system is the school education system, referred to as the academic system.

With the development of modern education, the academic system is not only the abbreviation of school education system, but also the general name of all kinds of educational institutions. It refers to the system of schools at all levels in a country, which stipulates the nature, tasks, admission conditions, study years and the vertical and horizontal relationship between them.

Dual school system

The dual-track school system is represented by Britain. The first track is top-down, and its structure is universities (later including other institutions of higher learning), middle schools (including preparatory classes for middle schools and independent schools), in addition to family education below middle schools.

The other track is bottom-up, and its structure is primary schools and vocational schools after them (in the early days, it was mainly primary vocational education linked with primary schools, and later junior high schools were added, forming secondary vocational education linked with junior high schools). Later, with the deepening of social reform, Britain tried to integrate junior high school and senior high school, allowing a certain degree of communication between the two regulations.