Level: CEFR is the shared yardstick
CEFR runs A1 to C2 and describes what you can do, not how long you have studied. If you can handle everyday transactions but stall in a long meeting, you are likely B1. If you can argue a point under pressure but still want polish, you are probably C1. We confirm this with a short placement conversation rather than a written test alone, because speaking usually reveals more.
Courses are grouped so nobody sits far above or far below the room. If the group turns out to be the wrong fit in the first week, we move you.