With the promotion of the national college entrance examination pilot reform, the new college entrance examination policy has been implemented in Shanghai, Zhejiang, Beijing, Tianjin, Shandong, Hainan and other places. Its model is generally "3+3", and the combination of arts and sciences is cancelled, so students can decide their own subject combination. Corresponding to students' independent choice of subjects, senior high schools in the pilot areas began to comprehensively promote the "shift system" teaching and running schools with characteristics.
In June 2022, the new college entrance examination reform programs in Sichuan, Henan, Yunnan, Inner Mongolia, Shaanxi, Qinghai and Ningxia began to be implemented. In 2025, the "3+ 1+2" model will be implemented as a whole.