Over forty-eight million students attend America’s public schools. Each state is responsible for educating its students. Therefore, states provide most of the funding and regulations for schools. For example, states and individual school districts rather than the federal government, decide what curriculum and textbooks will be used in schools. Each state has a unique school system. Most states have many local school districts that determine educational requirements such as the age a child must be to start school, the number of days in a school year, and what kind of immunizations a child must have to enter school. Generally, students must finish twelfth grade in order to receive a high school diploma. The federal government sometimes sets standards that states must meet in order to receive federal funding. The No Child Left Behind Act was recently implemented by the federal government to improve America’s schools. Public schools are usually funded through property taxes. The federal government only provides about 10% of the funding for schools. Approximately $501 billion is spent every year to educate America’s children. Public schools provide textbooks for students, but students are usually responsible for school supplies like pencils, pens, folders, and paper.