The position changes of educational officials in Guozijian in Tang dynasty were highly independent. There were two major transitional ways, the first pattern is promoted from an assistant to a doctor within the same Guan (division); the second pattern is started from promotion within a Guan and followed by changing positions between different Guans (divisions). In addition, there were also crossing promotion and bridging ways between these two ways. The divisions the officialdom worked were relatively concentrated on the similar divisions before and after they entered Guozijian. Educational officialdoms were mainly selected by by recruitment and recommendation before the Mid Tang Dynasty. After Mid Tang Dynasty, the shogunate officialdom became an important source of scholars in Guanzijian. If they leave Guozijian, they could become either a local official or a official in the capital city within a cultural sector.