Grades are distributed according to grades. Under the new college entrance examination mode, candidates choose three subjects from physics, chemistry, biology, politics, geography and history as college entrance examination subjects, and give points according to their grades. Grading: 100 is the perfect score, and 40 is the lowest score. According to the number of candidates, it is divided into 2 1 grade, with a difference of 3 points for each grade. At present, 1% of the students in the subject are 100, and 2% of the students are 97. Grading by analogy. Generally speaking, it is to rank the test scores of candidates and give corresponding scores according to grade intervals.