At present, correspondence education is mainly based on on-the-job, part-time and self-study, supplemented by face-to-face teaching. Also known as a university without walls, it can teach remotely, regardless of space, time and place. Correspondence learning means that the school gives you textbooks. You learn by self-study, giving lectures on TV, using computers and communicating with teachers through letters and emails.

Homework is also handed in by letter or email. Sometimes there will be a few days of face-to-face study and exams, and you can get the corresponding certificates through the exams. Correspondence education is put forward relative to face-to-face education, and the main target of correspondence education is on-the-job personnel and students who can't live without work and study.

Teaching is mainly self-study, supplemented by face-to-face teaching. Students register by letter, the school gives students textbooks and other counseling materials, and the communication between teachers and students is also completed by letter, so that students can complete their studies without delaying their work and study.

Junior high school and junior high school exams are set according to liberal arts and science respectively. The subjects of the unified examination of arts and sciences are Chinese, mathematics and foreign languages. Mathematics is divided into liberal arts and science, and foreign languages are divided into English, Japanese and Russian. Candidates can choose one. Candidates who take the senior high school entrance examination also need to take the examination of professional basic courses. The basic course for liberal arts majors is "History and Geography Synthesis" (abbreviated as "History and Geography"), and the basic course for science majors is "Physics and Chemistry Synthesis" (abbreviated as "Physics and Chemistry Synthesis").