China has adopted a nine-year compulsory schooling system, which means all children are required to attend school for at least nine years. Students have to complete both the primary school program and the junior middle-school program. Higher education is only for those students who have passed examinations of all levels. Student must pass the entrance examination for senior middle schools or middle-level technical schools. After two, three or four years, they have to go through national college entrance examination for admission to universities.