NEW YORK (Reuters) - Muslim parents, students and civic groups are campaigning to add two of their religious holidays to the New York City public school calendar, pinning their hopes on state lawmakers after failing to win over Mayor Michael Bloomberg to the idea. Putting Eidul Fitr, a holiday marking the end of Ramazan, and Eidul Azha, celebrating the end of the Haj, on the list of official school holidays will help ease suspicion and reduce anti-Muslim sentiment nearly a decade after the September 11 attacks, they say. Supporters say there are more than 100,000 Muslim students in the public schools, or about 12 percent of the enrolment. Hundreds of supporters gathered outside City Hall on June 30 to pressure Bloomberg on the issue, saying the holidays could be recognised by adding just five days off over the next decade, since many fall on existing holidays or weekends. Bloomberg rejected the proposal, arguing city students cannot afford more days off. Just four in 10 students graduate on time and one in 10 drops out, according to statistics. Everybody would like to be recognised but the truth of the matter is we need more school days, not less, he said. Supporters now are looking to a bill that calls for instituting the Muslim holidays as days off in city schools. It is pending in the state Senate and Assembly and if it becomes law, it would supersede Bloombergs decision despite his control of New York City schools. The school calendar currently has 13 observed holidays, including Jewish ones such as Rosh Hashana and Christian holidays such as Good Friday. The religious holidays have been on the calendar for at least several decades. Of the 11 generally observed Muslim holidays, none are on the school calendar. There is a large group of people who feel like they have to choose between religion and school, said Faiza Ali, a spokeswoman for the Council on American-Islamic Relations. The issue surfaced in 2006, when Eidul Azha fell on the same day as a statewide reading test. Some Muslim students stayed home, missing the crucial skills test. Others attended, missing the holiday with their families.