How to buy a TEFL certificate in the USA? Where to get a fake TEFL certificate? How long to buy a fake TEFL certificate? Order a fake TEFL certificate online. Teaching English as a foreign language (TEFL) or TESOL (Teaching English as a Second Language) refers to teaching the English language to students with different first languages, typically used to imply that the English Language Learner may have already learned more than one language, prior to learning English. TEFL can occur either within the state school system or more privately, at a language school or with a tutor.