The Cambridge exams involve all levels of knowledge in accordance with the Common European Reference for Languages (CEFR)
YLE (Young Learners Exams) A1-A2 - The Beginner level KET (Preliminary English Test) A2 - The Basic level PET (Preliminary English Test) B1 - The Intermediate Level FCE (First Certificate in English) B2 - The Upper Intermediate Level CAE (Certificate in Advanced English) C1 - The Advanced Level CPE (Certificate in Professional English) C2 – The Professional Level