Shinto shrine priesthood was reorganized considerably by Japan's modern political history: the Meiji government, from 1868, incorporated many shrines and their priests into an official state apparatus, State Shinto, which classified shrines by rank, funded and administered many of them directly, and used Shinto ritual to reinforce nationalist ideology closely tied to the emperor's own claimed divine status, a system that made shrine priests, in a real sense, state functionaries rather than independent religious clergy for much of the period between the 1870s and 1945.
The Allied occupation authority's December 1945 Shinto Directive formally dismantled State Shinto, disestablishing its official government support and separating shrine administration entirely from state control, a change the postwar Japanese constitution's own guarantee of religious freedom and separation of religion and state further entrenched. Jinja Honcho, the Association of Shinto Shrines, was established in 1946 as a private religious organization to coordinate the great majority of Japan's now independent shrines, a voluntary, non-governmental structure that has governed shrine priest certification, shrine administration standards and coordination among member shrines ever since, replacing the prewar state bureaucracy with a self-governing religious body.