At present, the so-called "make-up lessons in summer vacation", "make-up lessons in winter vacation" and "make-up lessons in weekends" in society are not entirely caused by the low salary of teachers. The low salary of teachers is only part of the reason, and there are more reasons, such as:

Parents want their children to learn more and get better grades. They think that children's study time at school is not enough for their "progress";

Some students are interested in learning, and students themselves want to learn. After all, the school is a big class. Some students don't pay attention when studying because of the environment or other conditions, and want to consolidate or answer questions by "making up lessons".

Comparison psychology, parents don't want their children to be worse than other children; Students don't want their grades to be lower than their classmates, which will also prompt parents and students to make up for it by "making up lessons";

Due to the lack of school resources, not every student can get the opportunity for teachers to make up lessons alone. Most students are studying or studying with a living mind, and the quality of their grades is "determined by heaven";

Social employment pressure, what students see is the employment pressure of their parents or the employment pressure instilled by their parents: "If you don't get good grades, you can only do coolies in the future";

Some interest-oriented teachers are biased. What they convey to parents is that students can't fully learn what they want to learn in school classes, and they must make up for it by "making up lessons".