As strange as that sounds, most TEFL / TESOL providers in Thailand are not legally registered businesses. They operate purely as a website and rent out conference rooms at a hotel or resort to provide the training.  If they are not a legally registered business, there will be zero legitimacy or consumer protection. Holding a company registration should be the first basic element to look for as it sets a foundation of trust for the rest of the business. Rest assured, Entrust TEFL is a fully registered and bonded company with two permanent locations in Thailand. Being a legally registered business does not only mean that we pay taxes and are subject to its laws, but it also means that as a consumer you have the peace of mind that we are fully bonded, insured and all our employees are working legally.