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.