Upper secondary education, or "framhaldsskóli", follows lower secondary education. These schools are also known as gymnasia in English. Though not compulsory, everyone who has had a compulsory education has the right to upper secondary education. This stage of education is governed by the Upper Secondary School Act of 1996. All schools in Iceland are mixed sex schools. The largest seat of higher education is the University of Iceland, which has its main campus in central Reykjavík. Other schools offering university-level instruction include Reykjavík University, University of Akureyri, Agricultural University of Iceland and Bifröst University.