In tandem with the recommendations on creating space for students and catering for learner diversity set out in the review report with the theme “Optimise the curriculum for the future, Foster whole-person development and diverse talents” of the Task Force on Review of School Curriculum, the measures to optimise the four senior secondary core subjects have been implemented from Secondary 4 since the 2021/22 school year, and are extended to Secondary 6 in the 2023/24 school year.