An Indonesian state Islamic university faced criticism this week after it barred female students from wearing full-face veils. University officials say the veils were banned because of fears over the spread of extremist ideology at the school. Many Muslim groups and activists object to the ban. They say the Quran, Islam’s holy book, requires women to cover themselves in public. Indonesia is home to the world’s largest Muslim population. Religious experts say most Indonesian Muslims practice a moderate form of Islam. But the country has experienced a rise in the number of more conservative clergy and religious centers. The full veil, or burqa, ban was announced at the Sunan Kalijaga State Islamic University in Yogyakarta, on the island of Java. The university said it had 41 students who wore burqas. It said they would be offered guidance at meetings and asked to take off the veil if they wanted to graduate from the school.