The Holocaust in curricula discusses the ways in which the Holocaust is presented in secondary school level history and social studies curricula worldwide. It is a key component of education about the Holocaust. The status of the Holocaust in curricula varies considerably worldwide. A leading publication on the subject, The International status of education about the Holocaust: a global mapping of textbooks and curricula, reveals four main categories of curricula in respect of the Holocaust: Direct Reference, Partial Reference, Context Only, and No Reference.