The dual-track school system means that the school system of a country is basically composed of two different school systems, one for the ruling class and the other for the general public. They are obviously different in educational purposes, educational objectives, educational contents and admission qualifications, and they coexist and are not related to each other.

Historically, Britain, France, Germany and other European countries are typical representatives of countries that implement this educational system, so this educational system is also called "Europe" or "Western Europe".

Develop a dual-track education system;

After entering the 20th century, especially after the Second World War, with the widespread practice of the concept of equal educational opportunities, the aristocratic, class and undemocratic nature of the dual-track school system has been severely criticized, so Britain, Germany, France and other countries have successively launched the unified school movement. Although the expression and realization of this movement are inconsistent, on the whole, the school system has been unified and simplified in the primary education stage.

As a result, the dual-track school system was partially changed and gradually evolved into a branch school system. In addition, with the implementation of the comprehensive system in secondary education schools, the branch school system in many European countries has gradually shifted to the monorail school system.