16 culture class. According to official website, Nanning Education Bureau, South Polytechnic Vocational High School has classes five days a week and two days off on weekends. One week's classes in vocational high schools are divided into 16 culture classes. Cultural courses include Chinese, mathematics, physics, chemistry, biology, history, geography, ideology and morality (politics), English, music, fine arts, sports and health, information technology, history and society, science and other compulsory professional courses.