15%-20%. Zhengzhou University is the only 2 1 1 university in Henan Province, and the graduate guarantee rate of 2 1 1 university stipulated by the Ministry of Education is not lower than 15%, so the graduate guarantee rate of stomatology students in Zhengzhou University must be/. Stomatology is a famous specialty of Zheng Da Medical College, which has always been the focus of the school.