A semester refers to a class unit in a school year. In China, it is mostly two semesters, divided into the last semester and the next semester. The school year is generally from September of autumn to September of the following year (including winter and summer vacations). Generally speaking, after a school year, one grade will be promoted.
China school rules:
During the school period (it can be primary school, junior high school, senior high school, university and graduate student), it is generally a school year from September in autumn to September of the following year (including winter and summer vacations). Generally speaking, after a school year, one grade will be promoted. At present, there are six academic years in primary school, three academic years in junior high school, five academic years in middle school and three academic years in senior high school in China.
Four years of undergraduate course, three years of junior college, three years of master's degree (a few years) and two years of doctor's degree. In addition, medical undergraduates have five academic years, seven consecutive academic years and eight consecutive academic years.