There is virtually no adult illiteracy. School attendance is compulsory between the ages of 6 and 15. Pupils attend primary schools for six years and then enter secondary schools for a period of up to seven years. In 1997, primary school enrollment totaled 28,437 elementary pupils with 1,844 teachers. Student-toteacher ratio stood at 15 to 1. In the same year, 28,796 children were enrolled in secondary schools, with 2,836 teachers. As of 1999, 96% of primary-school-age children were enrolled in school, while 82% of those eligible attended secondary school.
Post-secondary institutions in Luxembourg include the Central University of Luxembourg (founded in 1969), Superior Institute of Technology, and teacher training schools. However, most advanced students attend institutions of higher learning in Belgium and France. From 1994 to 1995, 3,309 students were at foreign universities, including 1,226 in Belgium and 754 in France.