The gold content of the unified examination is greater than that of the self-taught examination. Self-taught examination belongs to part-time adult education diploma, belongs to the second degree, and unified examination belongs to full-time undergraduate or junior college diploma, which is the first degree with high gold content and the most recognized degree in society at present.

Unified examination means that full-time students enter the university through the entrance examination and complete their studies. Self-study exam refers to higher education self-study exam, which is a national exam for self-learners. It is a higher education that combines individual self-study, social assistance and national examination.