Thirty people. According to the inquiry of the School of Management of Sun Yat-sen University, there are about 30 students in a grade. The School of Management of Sun Yat-sen University is a second-level college of Sun Yat-sen University, which was founded in 1985. The School of Management of Sun Yat-sen University is the second business school in China, and the first business school in South China to obtain three top international certifications: AACSB, EQUIS and AMBA.