From 18 to 19, a dual-track school system was formed in western Europe under the influence of social politics, economic development and specific historical and cultural conditions. Taking the British dual-track school system as a typical example, the school system is divided into two tracks: the first track is set up from top to bottom for bourgeois children, and its structure is universities (later including other institutions of higher learning) and middle schools (including preparatory classes for middle schools), which is highly academic; The other track is set for the children of working people from bottom to top, and its structure is primary school (later primary school and junior high school) and vocational school. This academic system is not conducive to the popularization of education.