You are asking why the teaching-funded examination is judged by four schools, because it will be fairer if the evaluation is high.

The Ministry of Education entrusts Zhejiang Normal University, Shandong Normal University, Sichuan Normal University and Southwest University as marking institutions. Therefore, it is not the provinces that are responsible for marking papers in their own provinces, but the designated marking points are unified throughout the country. The function of unified marking is to improve the evaluation of teacher qualification certificate, which is fair and just, and the Ministry of Education is responsible for it.