September 1. In 2023, the first year of high school in Hainan Province will start in September 1. According to Hainan Education official website, the Provincial Department of Education recently issued a notice to arrange summer jobs for primary and secondary schools. Primary schools in Hainan Province have started their summer vacation on July 8th, and middle schools will start their summer vacation on July 1 5th, register on August 3rd1day, and officially start school on September1day. Senior three graduating classes can start two weeks in advance, which is determined by cities and counties according to local actual conditions.