12 points. The biology score of the senior high school entrance examination in Chengdu is 100, which is scored according to four grades: Grade A, 80 to 100, which is equivalent to a perfect score of 20, Grade B, 7 1 79, which is equivalent to 18, and Grade C, which is equivalent to/70. In 2023, the total score of Chengdu senior high school entrance examination was 7 10. Among them, Chinese, mathematics and English are all 150, physics is 70, chemistry is 50, physical education is 60, and thought, history, biology and geography are 20.