While 'national education' has regularly been invoked by post-1997 Hong Kong administrations, its pursuit has acquired new force and urgency since the introduction in 2020 of a National Security Law. Investigating the role of schooling in this reinvigorated project of thought reform, this article asks how far recent initiatives have merely amplified official identity discourse or marked a qualitative change. It does so primarily by analysing the official curriculum and textbooks for Citizenship and Social Development (CSD), introduced in 2022 to replace Liberal Studies, a subject widely blamed by nationalists for fomenting sedition. Following a comparative overview of the new and old curricula, there is a discussion of changes to the textbook treatment of: the historical framing of identity; the 'One Country, Two Systems' model; culture's significance for Hong Kong's place in China; and civil, legal and constitutional rights and duties. The analysis concludes with reflections on what these changes imply both for China's efforts to re-educate its unruly Hong Kong subjects, and for scholarly efforts to understand and explain such processes.