Testing English as a foreign language
The CELS exams are English exams for people who want to study in England. CELS means "Certificates in Communicative Skills in English". The CELS exam comes from the old ARELS and Oxford exams; now they are Cambridge ESOL exams. The ARELS exam tests speaking and listening. The Oxford exam tests writing and reading. The new name of Arels and Oxford together is CELS.