Common European Framework of Reference for Languages
The “Common European Framework of Reference for Languages” (CEFR) helps to standardise different course levels and support you in your choice of course. There are a total of six levels: A1, A2, B1, B2, C1 and C2. These levels are further divided into two sub-levels (A1/1, A1/2, A2/1, etc.). A1 and A2 are elementary levels; B1 and B2 intermediate levels; and C1 and C2 advanced levels.
The CEFR describes comprehensively what competence language learners have at a certain level and what communicative situations they can handle. In this way you can measure your learning progress throughout your life and at each level.