More than three-quarters of Bulgarians subscribe to Eastern Orthodoxy. Sunni Muslims are the second-largest religious community and constitute 10% of Bulgaria's overall religious makeup, although a majority of them are not observant and find the use of Islamic veils in schools unacceptable. Less than 3% of the population are affiliated with other religions and 11.8% are irreligious or do not self-identify with a religion. The Bulgarian Orthodox Church gained autocephalous status in AD 927, and has 12 dioceses and over 2,000 priests. Bulgaria is a secular state with guaranteed religious freedom by constitution, but Orthodoxy is designated as a "traditional" religion.