Algeria's educational system has grown rapidly since 1962; in the last 12 years, attendance has doubled to more than 5 million students. Education is free and compulsory to age 16. Despite government allocation of substantial educational resources, population pressures and a serious shortage of teachers have severely strained the system, as have terrorist attacks against the educational infrastructure during the 1990s. Modest numbers of Algerian students study abroad, primarily in France and French-speaking Canada. In 2000, the government launched a major review of the country's educational system.