The University of the State of New York (USNY) (distinct from the State University of New York, known as SUNY), its policy-setting Board of Regents, and its administrative arm, the New York State Education Department, oversee all public primary, middle-level, and secondary education in the state. The New York City Department of Education, which manages the public school system in New York City, is the largest school district in the United States, with more students than the combined population of eight U.S. states. Over 1 million students are taught in more than 1,200 separate schools. Primary and secondary schools Public secondary education consists of high schools that teach elective courses in trades, languages, and liberal arts with tracks for gifted, college-bound and industrial arts students. New York is one of seven states that mandate the teaching of Holocaust and genocide studies at some point in elementary or secondary school curricula. One of the major public policy issues in recent decades has been the attempt by poorer communities to get more state funding to compensate for what they cannot generate in property taxes. The reliance of most communities on local property taxes to support schools has created the paradoxical situation of residents in wealthier communities paying a lower tax rate than residents in communities of lower average income. While state law has required integrated schools since 1900 (overturning an 1894 law that permitted communities to establish separate schools for children of African-American descent), patterns of residential segregation in many areas has often led to de facto segregated schools. As studies have shown the importance of integrating children from different economic classes, more than ethnic groups, communities are devising different methods, such as magnet schools, to deal with attracting diverse groups of students. Charter schools , there were 183 charter schools serving 70,000 students in the state. History Between 2000 and 2009, school enrollment declined by 121,000 students, and the number of teachers increased by 15,000. The student:teacher ratio was the eighth lowest in the country, 13:1. At $16,000, its per student spending was the nation's highest. Colleges and universities The SUNY System New York's statewide public university system is the State University of New York (SUNY), which includes top-ranked schools such as University at Albany, Binghamton University, University at Buffalo, and Stony Brook University. With a total enrollment of 459,550 students and 1.1 million continuing education students spanning 64 campuses across