520 points. Nanyang Public College, the predecessor of Jiaotong University, set up an intermediate people's court as early as the beginning of its establishment to train qualified students for the university. 1908, the Intermediate People's Court was changed into an ordinary middle school, also known as an affiliated middle school, which is famous for its excellent students. Class ib is a characteristic class in the middle school attached to Jiaotong University, a top class in the school, and a fixed class that transports qualified students to Beijing Jiaotong University. The admission score of this class is 520 points. You can enter the class if you pass the school exam and reach the score line.