Shanxi new high school qualification examination is divided into ab volumes. AB volume means that the objective questions on the answer sheet are arranged differently and the test paper is exactly the same. The results of qualification examination are presented in the form of "qualified and unqualified". The scores of Chinese, mathematics, foreign languages, physics, chemistry, biology, ideology and politics, history and geography are divided into five grades according to the corresponding proportion of the total number of candidates who have achieved effective results in this exam, and the rankings are A, B, C, D and E from high to low.