According to the headline query, adult college entrance examination correspondence belongs to national recognition, part-time education, and is a national education diploma. Correspondence is only a learning form after the adult college entrance examination, and it is also a teaching method. 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.