According to the convention, basically a class in school lasts 40~50 minutes (mostly 45 minutes). In social institutions (generally training institutions), each class lasts for one to two hours.

The class is a Chinese character, and the pinyin is xué shí. According to the educational dictionary, class hours refer to the time unit of teaching. The time of a class is called a class hour. In China, a class in primary and secondary schools is generally 45 minutes, and a class in colleges and universities is 50 minutes. Also known as "class hours".

Nowadays, college courses are all academic progress in class hours.

The class hours of adult education are different according to the characteristics of the industry.

For example, the class time for physical training is usually 30 minutes, while for adult vocational education, the class time for Shanghai Lebo is 90 minutes and the rest time is 15 minutes (going to the toilet, etc.). ).

That is, from 9: 00 am to 10: 30 am, 10: 45 am to 12: 00 am.

Educational dictionary hours refer to the time unit of teaching. The time of a class is called a class hour. In China, a class in primary and secondary schools is generally 45 minutes, while that in colleges and universities is 50 minutes. Also known as "class hours".