198 1 year. According to official website of Nanchang University, self-taught examination in Nanchang University was a form of higher education approved by the State Council in198/kloc-0. Candidates can complete their studies according to the courses and credits specified in the plan, and pass the ideological and moral appraisal to obtain the graduation certificate. Jiangxi Education Examinations Institute, which is recognized by the state, runs self-study examinations for higher education. Higher education self-study exam is a part-time diploma, college exam is a college degree, and undergraduate exam is a bachelor degree. Just like the graduation certificate, it is a degree recognized by the state.