Adult education is divided into several forms: adult college entrance examination, self-taught examination, TV University and distance education. Correspondence is a learning form of adult college entrance examination. Passed the national adult college entrance examination and was admitted to colleges and universities, and issued admission notices. Belongs to the national education series. The state recognizes academic qualifications, participates in the national unified adult college entrance examination, and all provinces and regions organize admission. Correspondence study is more suitable for office workers and candidates with less free time. Correspondence teaching mainly focuses on planned, organized and guided self-study, and organizes systematic centralized face-to-face teaching. The main links of correspondence teaching are: counseling and answering questions, homework, experiment, practice, examination, course design, graduation design and defense. Arrange centralized face-to-face lectures about three times a year 10 days or half a month. In colleges and universities that recruit teachers, the face-to-face teaching time is generally hot and cold. During the study period, students mainly rely on their own reading, TV lectures, the Internet and other ways to learn, and communication with teachers is also carried out through correspondence and e-mail. Correspondence education, like full-time and part-time education, belongs to adult higher education. It is recognized by the state, registered electronically and available on the Internet. Those who meet the requirements of the recruitment colleges can be used for postgraduate study. Therefore, the state recognizes the diploma of correspondence. But we must make it clear that national recognition does not mean that we can also be recognized by the company when applying for a job. The most important thing for us is to improve our professional ability. Simple and popular: 1, correspondence means that the school sends you the teaching materials and learning requirements, you study by yourself, and then the school arranges face-to-face lectures twice a year 10 days or about half a month. 2. Amateur (night university) refers to taking classes in spare time (usually at night or on weekends) with teachers giving lectures.