1632, the Czech educator Comenius systematically discussed the class teaching system in theory for the first time in On Big Teaching, and basically established the class teaching system.

Class teaching system is the most important and basic form of teaching organization in China, and sometimes it can also be called classroom teaching. The main form of classroom teaching is the class teaching system, which is a collective teaching form.

It divides students into classes with a fixed number according to their age and education level, that is, the students in the same teaching class are roughly the same age and education level, and the number is fixed. A form of organization conducted by teachers according to the curriculum plan and prescribed timetable.

Characteristics of class teaching system

1. Classes are taught collectively with a fixed number of students.

2. Teaching in classes. Class is the basic unit of teaching activities. In teaching, class after class is generally divided into single class and comprehensive class.

3. Teaching on time. Each "class" is stipulated to be held in a fixed unit time, which is called "class hour", and there are certain intervals and breaks between classes. For example, according to different periods of study, the class hours can be 45, 30, 15 minutes, etc.