The applicants who pass this step are allowed to take the second step, which is examination. In this step, the students need to take exams for three period in order to prove that they are smart enough to enter the school. In the first period, the exam is used for examining students’ ability in various aspects. During the second and third period, students are rated for their specialties in math and science. The students who show very decent talents are specially allowed to enter this school without taking third exam, and this system is called prior selection.