The climate varies with terrain, from tropical along the coast to semiarid and hot in the north. Exceedingly hot and humid, the coastal belt includes some of the wettest places on earth. For example, Debundscha, at the base of Mt. Cameroon, has an average annual rainfall of 405 inches (10,287 mm).
Education is free in state schools and compulsory between ages 6 and 12. Government funds are available to mission and private schools. Most secondary schools have been made bilingual, with instruction in both French and English. Working alongside the public schools are the missionary schools, which have been extremely important in the history of Cameroonian education. As of 1999, public expenditure on education was estimated at 2.6% of GDP.
The constitution divides Cameroon into 10 semi-autonomous regions, each under the administration of an elected Regional Council. A presidential decree of 12 November 2008 officially instigated the change from provinces to regions.