Modern system of ranked Shinto shrines
The modern system of ranked Shinto shrines (近代社格制度, Kindai Shakaku Seido; sometimes called simply shakaku (社格)) was an organizational aspect of the establishment of Japanese State Shinto. This system classified Shinto shrines as either official government shrines or "other" shrines.
Source: Wikipedia — Modern system of ranked Shinto shrines (CC BY-SA 4.0)