The topic of the Holocaust has been included in successive versions of the National Curriculum for History where it is currently one of only four named historical events that must be taught in Key Stage 3 (KS3), the other three being the two World Wars and the Cold War (DfEE, 1999). Initial drafts of the 2000 Order for History included the Holocaust as the only mandatory content (Haydn, 2000). However, teaching the Holocaust in history is not easy. Rather than discussing the difficulties, this article sets out what in the author's view appears to be the fundamental problematic question for history teachers: Is the rationale behind the inclusion of the Holocaust on the National Curriculum for History historical, social, or moral? (Contains 5 notes.)