English is the official national language. It is taught in grade schools, used in courts of law, and by most newspapers and some radio broadcasts. Bantu languages, particularly Luganda (the language of the Baganda), are widespread in the southern, western, and central areas. Luganda is the preferred language for native-language publications and may be taught in school. Nilotic languages are common in the north and northeast, and Central Sudanic clusters exist in the northwest. Kiswahili and Arabic are also widely spoken.