Experience and accreditation. Our staff each has over a decade of TEFL experience, certification, Masters in TESOL or (Applied) English Linguistics, and some also have teaching qualifications such as PGDE. Our courses have each been approved by OTCAC for full accreditation, meaning they meet objective standards set by the industry for training new EFL teachers. StudyTEFL as an institution is also accredited by CPD and has full UKRLP registration, meaning we are recognized as a valid education institute by a UK government branch.