The official language of Brazil is Portuguese[316] (Article 13 of the Constitution of the Federative Republic of Brazil), which almost all of the population speaks and is virtually the only language used in newspapers, radio, television, and for business and administrative purposes. The most famous exception to this is a strong sign language law that was passed by the National Congress of Brazil. Legally recognized in 2002,[317] the law was regulated in 2005.[318] The law mandates the use of the Brazilian Sign Language, more commonly known by its Portuguese acronym LIBRAS, in education and government services. The language must be taught as a part of the education and speech and language pathology curricula. LIBRAS teachers, instructors and translators are recognized professionals. Schools and health services must provide access ("inclusion") to deaf people.[319]