The Common European Framework provides a common basis for the elaboration of language syllabuses, curriculum guidelines, examinations, textbooks, etc. It describes in a comprehensive way what language learners have to learn in order to use a language for communication and what knowledge and skills they have to develop so as to be able to act effectively. The description also covers the cultural context in which language is set. The Framework also defines levels of proficiency which allow learners’ progress to be measured at each stage of learning and on a life-long basis. By providing a common basis for the explicit description of objectives, content and methods, the Framework will enhance the transparency of courses, syllabuses and qualifications, thus promoting international cooperation in the field of modern languages. The provision of objective criteria for describing language proficiency will facilitate the mutual recognition of qualifications gained in different learning contexts, and accordingly will aid European mobility.