There was no definite answer to the question of how many books there were in each subject in high school textbooks because the number of textbooks in high school would vary from high school to high school, from region to region, and from subject to subject. Take mathematics as an example. According to some data, the number of mathematics textbooks used in high schools across the country is between 50 and 100. The exact number may vary by region and school. The number of textbooks for other subjects would also vary, such as Chinese, English, Physics, Chemistry, and Biology. Therefore, it was impossible to determine how many books each subject would need to be considered according to different regions and schools.