The national language is Bhutanese (Dzongkha), one of 53 languages in the Tibetan language family. The script, here called Chhokey "Dharma Language"), is identical to classical Tibetan. Earlier it is spoken only in western Bhutan and it became national language in 1971 is now widely spoken throughout the country. Besides Dzongkha there are three other dominant languages which includes Bumthangkha which is spoken in central Bhutan, Tsanglakha, spoken in eastern Bhutan and Lhotsahmkha, spoken in southern part of Bhutan. There are also roughly 19 other dialects which is very little in common. In the schools English is the medium of instruction and Dzongkha is taught as the national language.