This chapter analyzes the impact of the change of Hong Kong's sovereignty on the formal curriculum of secondary schools and identified the mechanism of curriculum control. In this chapter, the examination syllabus, the school textbooks, and the school-based curriculum project are also examined in the light of the impact of the 1997 issue. The author concludes that the school curriculum in Hong Kong has always been influenced by political consideration especially in the subject of Geography, History, and Economics and Public Affairs.