There are approximately 2,500 independent schools in the UK. These schools are not funded by the state and obtain most of their finances from fees paid by parents and income from investment. Although they can set their own curriculum and admission criteria, all independent schools must be registered with the Department for Education and Skills (DfES) and must reach (and maintain) certain standards. These standards are regularly monitored by either OFSTED (Office for Standards in Education) or the Independent Schools Inspectorate.