With the global expansion of International Baccalaureate (IB), tensions have emerged between IB and the national education systems. This poses challenges to international education governance in many countries. In mainland China, IB programmes have rapidly become more prevalent since their introduction in 1991. However, new policies have imposed censorship and restrictions on international programmes regarding international education as a potential threat to China's educational sovereignty, cultural identity, and educational equity. Shanghai has the highest number of IB schools and the strictest policies in mainland China. To understand China's international education policy governance, this study traces the policy evolution of Shanghai's IB education through document analysis and interviews. Furthermore, this study examines the responses, perceptions, and demands of non-governmental stakeholders regarding current restrictive policies. Results show that the development of IB education in Shanghai has undergone three stages of policy transformation: support, regulation, and restriction. Against this policy transformation, non-governmental stakeholders believe that IB education is a "necessity". Therefore, this study suggests that IB education governance in China should incorporate the elements of network governance.