In South Korea, universities have used predominantly simplified characters since 1990s. In high school, Chinese is one of the selective subjects. By the regulation of the national curricula standards, MPS I and traditional characters had been originally used before (since the 1940s), but by the change of regulation, pinyin and simplified characters have been used to pupils who enter the school in 1996 or later. Therefore, MPS I and traditional characters disappeared after 1998 in South Korean high school Chinese curriculum.