former educational ladder 6 + 3 + 3 was changed in 1990. The primary language at all levels is Arabic. Schools are concentrated in urban areas; many in the west have been damaged or destroyed by years of civil war. In 2001 the World Bank estimated that primary enrollment was 46 percent of eligible pupils and 21 percent of secondary students. Enrollment varies widely, falling below 20 percent in some provinces. The literacy rate is 70.2% of total population, male: 79.6%, female: 60.8%. Culture Sudanese culture melds the behaviors, practices, and beliefs of about 578 ethnic groups, communicating in numerous different dialects and languages, in a region microcosmic of Africa, with geographic extremes varying from sandy desert to tropical forest. Recent evidence suggests that while most citizens of the country identify strongly with both Sudan and their religion, Arab and African supranational identities are much more polarising and contested. Music Sudan has a rich and unique musical culture that has been through chronic instability and repression during the modern history of Sudan. Beginning with the imposition of strict Salafi interpretation of sharia law in 1983, many of the country's most prominent poets and artists, like Mahjoub Sharif, were imprisoned while others, like Mohammed el Amin (returned to Sudan in the mid-1990s) and Mohammed Wardi (returned to Sudan 2003), fled to Cairo. Traditional music suffered too, with traditional Zār ceremonies being interrupted and drums confiscated . At the same time European militaries contributed to the development of Sudanese music by introducing new instruments and styles; military bands, especially the Scottish bagpipes, were renowned, and set traditional music to military march music. The march March Shulkawi No 1, is an example, set to the sounds of the Shilluk. Northern Sudan listens to different music than the rest of Sudan. A type of music called Aldlayib uses a musical instrument called the Tambur. The Tambur has five strings, is made from wood and makes music accompanied by the voices of human applause and singing artists. Cinema The cinema of Sudan began with cinematography by the British colonial presence in the early 20th century. After independence in 1956, a vigorous documentary film tradition was established, but financial pressures and serious constraints imposed by the Islamist government led to the decline of filmmaking from the 1990s onwards. Since the 2010s, several initiatives have shown an encouraging revival of filmmaking and public interest in film shows