Among Iranian Muslims, Shiites account for more than 95% of the total number, among which 12 imams account for more than 85%, and the rest are Yi Sima, Zaid, Bahai and Babu. 12 imams follow ursula Sect (80%) and Abari Sect (20%) in teaching methods respectively. Sunnis account for about 5% of the total number of Muslims, mainly Kurds, Arabs and Turkmen. In terms of teaching methods, Sunni Muslims belong to Shafiyi School (60%) and Hanafi School (40%). The state has set up religious courts in Tehran, the capital, and other provinces. Religious judges are responsible for adjudicating civil and religious cases according to teaching methods. Ulema (religious scholar) has a high social status, and most of the main officials of governments at all levels are senior Ulema. There are more than 80,000 mosques in China. Mosques and holy tombs have a large number of Wakaf land and real estate, and religious taxes are the main source of religious funds. Religious education is divided into three levels: primary education generally recruits children in mosques to learn Persian classics and common sense; Secondary education is conducted in various specialized religious schools to train middle-level religious professionals; Higher Islamic Scripture Colleges have been established in Qom, Mashhad and Isfahan to train senior public religious professionals and government officials. Senior titles of ulema (such as Ayatollah) were awarded by the Supreme Council of Elders of Qom Islamic College. Iran has published a large number of Islamic classics and periodicals in Persian and Arabic. Iran is a member of the Organization of the Islamic Conference, the Islamic World League and the World Islamic Congress.