This document provides information about bilingualism in Madrid, Spain. It summarizes that the bilingual English program started in 2004 in 26 primary schools and has since expanded to 379 primary and secondary schools in 2012/2013. It describes the distribution of subjects taught in each language and the objectives to create an immersive bilingual environment. Native language assistants support teachers and work 16 hours per week with students. The advantages include increased skills and qualifications for students' professional futures.