A respectable accreditation body will thoroughly inspect not only a course, but also the organization providing it, and the people who work there.
Course checks: They will generally go through each lesson in a course, checking that it provides accurate and complete information for the purpose of training new language teachers. They’ll also check through the assessment process of a course, to ensure that trainee teachers are given accurate feedback and graded in a standardized way.
Team checks: Key people in the organization may also have background and qualification checks. Accreditation bodies such as WTEFLAC require that those involved with course development and user grading have at least 3 years of experience in the ESL industry.
Organization checks: A good accreditation body will also require varification of a company’s business details to ensure they’re a legally registered entity which is able to charge for its services, and pay taxes in their respective region.