Are you asking how many graduate schools there are in quantitative economics, which are easier to test? There are many A-class and B-class graduate schools, which are not easy to test, but they still need to be reviewed. The following are graduate schools with quantitative economics in Class A:

Jilin University, China Renmin University, Huazhong University of Science and Technology, Dongbei University of Finance and Economics, Tsinghua University, Xi Jiaotong University, Nankai University, Fudan University, Chongqing University, Xiamen University, Southwestern University of Finance and Economics, Jinan University and Shanghai University of Finance and Economics.