What year's education in Xue Xin is ok? Com check the earliest?

Xue Xin. Com can query the electronic registration information (including academic certificates) of various higher education certificates recognized by the state since 200 1. Including postgraduate, general undergraduate, adult undergraduate (registration progress), online education (registration progress), open education, higher education self-study exam (registration progress) and higher education diploma exam (registration progress). If students graduate before 200 1, they need to log in to a certification institution designated by Xue Xin. Com for academic certification.