After September 2023. According to the Guizhou Provincial Education Bureau, the Education Department decided to adjust the academic system to 5 plus 4 after the school starts in September 2023, so as to reduce the academic burden of middle school students. The May 4th educational system is a system of five years in primary school and four years in junior high school. The ongoing May 4th experiment began in 198 1 year, in the primary school attached to Beijing Normal University in 1984 and in all schools in the former Yantai area (including Weihai, Yantai and Laixi). 1988, Shanghai began to comprehensively pilot the May 4th Movement.