Correspondence is a learning form of adult higher education and belongs to a learning level of higher education. According to the teaching plan of each major, teachers are sent to the communication station to organize face-to-face lectures and examinations during the winter and summer vacations or national legal holidays. Other forms of learning in adult higher education are amateur learning (evening school) and amateur learning (full-time).

Has passed the national adult unified college entrance examination, has been admitted to colleges and universities, and has issued admission notices. Belongs to the national education series. The state recognizes academic qualifications, participates in the national adult college entrance examination, and all provinces and regions organize enrollment in a unified manner.

There are only two kinds of correspondence education, namely, correspondence college education and undergraduate education.

Correspondence education is an adult higher education, which meets the requirements of recruiting institutions and can participate in postgraduate entrance examination.

Correspondence education, like full-time and amateur education, belongs to adult higher education, which is recognized by the state, electronically registered and provided on the Internet.