English C1 level - CEFR definition and tests | EF SET
www.efset.org › cefr › c1English level C1 is the fifth level of English in the Common European Framework of Reference (CEFR), a definition of different language levels written by the Council of Europe. In everyday speech, this level might be called “advanced”, and that is the official level descriptor for this level as well, also used by EF SET.