Spanish language
In Spain and in some other parts of the Spanish-speaking world, Spanish is called not only (Spanish) but also (Castilian), the language from the kingdom of Castile, contrasting it with other languages spoken in Spain such as Galician, Basque, Asturian, Catalan, Aragonese and Occitan.
Bilingual education
In addition to Castilian Spanish being the primary official language of Spain, the kingdom also has several co-official regional languages which enjoy equal and unbiased constitutional protection and promotion: Catalan/Valencian (in Catalonia, Valencia and the Balearic Islands), Galician (in Galicia), Basque (in the Basque Country and the northern zone of Navarre) and Aranese (in Val d'Aran, Catalonia).