DELF (Diplôme d'Etudes en Langue Française) and DALF (Diplôme Approfondi de Langue Française) are the only French as a foreign language diplomas issued by the French Ministry of Education. They are valid for life and are recognized worldwide. They allow you to officially validate your French learning.
These diplomas constitute a recognition of your school, university and/or professional background in French language. Moreover DELF and DALF allows you to study, work and immigrate in a French-speaking country.