Correspondence education is an adult higher education, a part-time diploma and a secondary education. Those who meet the requirements of the recruitment colleges can take the postgraduate entrance examination. Correspondence education, like full-time and amateur education, belongs to adult higher education, which is recognized by the state and electronically registered by the Ministry of Education. Candidates need to take the national unified entrance examination for adult college entrance examination, and they can only study by correspondence after being admitted to colleges and universities. The examination is held once a year in June+10, 5438.

Correspondence is a learning form and a teaching method of adult higher education. It belongs to a learning level of higher education, mainly according to the teaching plans of various majors, sending teachers to various correspondence stations to organize face-to-face lectures and examinations during winter and summer vacations or national legal holidays. There are three forms of adult college entrance examination: full-time, correspondence and amateur. Correspondence is the most mainstream one at present, and many colleges and universities take exams in this way.

Candidates who apply for correspondence courses from high school should have a high school education. Candidates who sign up for the college entrance examination must be those who have obtained a college diploma, a bachelor's degree or above issued by the national education series colleges and universities and the higher education self-study examination institutions recognized by the Ministry of Education. In addition, candidates who register for the exam must be at least 18 years old.

Adult education refers to a form of education different from ordinary full-time teaching. Adult education, regardless of age and sex, is mainly implemented by various adult schools. Through this educational process, people who are willing to receive systematic education in society will increase their abilities, enrich their knowledge, improve their technical and professional qualities, or turn to a new direction, and their attitudes and behaviors will be changed in two aspects: the all-round development of people and the balanced and independent development of social economy and culture.