centres) and secondary education (68%). This is largely due to the salient role of the so-called "educación concertada", which allows for privately owned centres funded by public money. Obligatory education Optional education: Bachillerato Bachillerato is usually taken if people aspire to go to college. Common Subjects are in red Optional Subjects are in pink Modality Subjects are in blue Technology Via are in yellow Natural Sciences Via are in green Humanities Via are in olive Social Sciences Via are in brown Arts Via are in beige Cultural diplomacy The cultural diplomacy of Spain has set European integration and Ibero-American relations among its main goals. It has used branding strategies such as the so-called . Since the 1980s, Spain has taken part in a number of "horizontal" initiatives as member of multilateral international organizations of the Ibero-American space such as the Organization of Ibero-American States (OEI, which was repurposed in 1985) and the Ibero-American General Secretariat (SEGIB). Similarly to other European countries, Spain has used the model of cultural institute (in the case of Spain the Instituto Cervantes) as leading tool for cultural diplomacy, with common aims such as the dissemination of the country brand, cultural exchange and cooperation, and linguistic and educational promotion. Nationalisms and regionalisms A strong sense of national identity exists in many autonomous communities. These communities—even those that least identify themselves as Spanish—have contributed greatly to many aspects of mainstream Spanish culture. Most notably, the Basque Country and Catalonia have widespread nationalist sentiment. Many Basque and Catalan nationalists demand statehood for their respective territories. Basque aspirations to statehood have been a cause of violence (notably by ETA), although most Basque nationalists (like virtually all Catalan nationalists) currently seek to fulfill their aspirations peacefully. There are also several communities where there is a mild sense of national identity (but a great sense of regional identity): Galicia, Andalusia, Asturias, Navarre (linked to Basque culture), Aragon, Balearic Islands and Valencia (the last two feeling attached to Catalan culture in different ways) each have their own version of nationalism, but generally with a smaller percentage of nationalists than in the Basque Country and Catalonia. There is some traction in the province of León pushing to separate from Castile and León, possibly together with the provinces of Zamora and Salamanca. Spain has a long history of tension between centralism and nationalism. The current organisation of the state into autonomous communities (similar to