This chapter offers a historical analysis of the international school sector in China, examining its evolution through five distinct phases: Emergence (1900–1949), Re-emergence (1980–1989), International Schooling 1.0 (1990–2009), International Schooling 2.0 (2010–2019), and the current phase, International Schooling 3.0 (2021 onward). While the sector had experienced significant growth driven by the expanding middle class and increasing demand for international education, it has more recently faced regulatory challenges. By synthesizing existing scholarship and integrating new empirical data, the chapter identifies key trends, including the diversification of international schools into three main types: International programs within mainstream public schools, Schools for Children of Foreign Personnel (SCFP), and private internationalized schools. The analysis highlights the shift from an integrative approach to a more China-centric perspective, reflecting a growing emphasis on national identity and regulatory compliance. The chapter concludes by proposing the heuristic of the “internationally-facing school” for understanding the changing nature of international schooling in China and beyond, suggesting that schools must navigate the complex interplay between national imperatives and global engagement in a post-regulated landscape.