The Common European Framework of Reference organises language proficiency into six levels: A1, A2, B1, B2, C1 and C2.
Basic user: A1 and A2
These levels describe foundational communication in familiar situations.
Independent user: B1 and B2
Learners can handle a wider range of work, study and travel communication.
Proficient user: C1 and C2
Users can understand and express complex ideas with increasing precision and flexibility.