Baku State University, the first established university in Azerbaijan was opened in 1919 by the government of the Azerbaijan Democratic Republic. In the early years of the Soviet era, Baku already had Azerbaijan State Oil Academy, Azerbaijan Medical University and Azerbaijan State Economic University. In the post-WWII period, a few more universities were established such as Azerbaijan Technical University, Azerbaijan University of Languages and the Azerbaijan Architecture and Construction University. After 1991 when Azerbaijan gained independence from the Soviet Union, the fall of communism led to the development of a number of private institutions, including Qafqaz University and Khazar University which are considered the most prestigious academic institutions. Apart from the private universities, the government established the Academy of Public Administration, the Azerbaijan Diplomatic Academy and various military academies. The largest universities according to the student population are Baku State University and Azerbaijan State Economic University. In addition, there are the Baku Music Academy and the Azerbaijan National Conservatoire in Baku established in the early 1920s. Publicly run kindergartens and elementary schools (years 1 through 11) are operated by local wards or municipal offices.