While Level 5 courses are not the same as a CELTA, they are assessed to be the same level of difficulty as a CELTA qualification. The difference between CELTA and Level 5 TEFL is the way they’re delivered. With a TEFL qualification, you’re more likely to study online at your pace while a CELTA course is typically full-time and in-person. When applying for TEFL jobs you may find a small number of employers request teachers have a CELTA.