Preparatory classes are college preparatory classes, which refer to students who attend college preparatory classes from junior high school and senior high school entrance examinations.

The preparatory class generally refers to the preparatory class of the university, which refers to the students who are admitted to the preparatory class from junior high school and senior high school in an exceptional way. They have a one-year make-up class in the high school of colleges and universities, which is connected with the courses of freshmen.

In the second year, I took the corresponding examinations in the province and transferred to the formal courses of colleges and universities. Students in the preparatory class have no formal university status and need to pass the formal entrance qualification examination to obtain it.

Students in pre-university classes generally have the following categories:

1. Students who enter the lower grades of universities in a special way. These students are under 15 years old. Their elementary school, junior high school and senior high school courses are all advanced through self-study, and the continuity of knowledge learning is poor, and some are not solid. It needs to be consolidated in the preparatory class to lay a good foundation for freshmen.

2. High-level athletes. High-level athletes recruited by colleges and universities have outstanding sports achievements, but their cultural achievements are controlled within 200 points below the local undergraduate admission score. Candidates with development potential and training prospects, with a cultural score of more than 300 points, can be admitted to the preparatory class. Students in the preparatory class can't take part in the university sports meeting held by the state during their study in the preparatory class.

3 outstanding students, student cadres and special students directly recruited by colleges and universities from the second year of high school. They passed the exam and entered the college preparatory class.

4. When enrolling students for preparatory classes in ethnic colleges, the first choice for minority candidates can be less than 80 points. In addition, there are many different forms of preparatory classes in colleges and universities.