Knowledge of the Polish language and Polish citizenship

A foreigner applying for the Polish citizenship must produce a graduation certificate from a school in the Republic of Poland or a graduation certificate from a school abroad with Polish as a classroom language or a certificate of language proficiency issued by the State Commission for the Certification of Proficiency in Polish as a Foreign Language. The document should be attached to the citizenship application. Detailed information on certificates can be found in the subsection dedicted to proficiency certificates.