Accreditation is a procedure by which your organization submits to a review by another organization that is supposedly in a better position to evaluate the honesty, integrity, and competency of your organization than either you or your customers. The primary concern of the accrediting body is your office procedures — at no point in the process are the accreditors concerned with the quality, the accuracy, or the veracity of the actual material you teach.
At the risk of offending the Almighty Musk, I must say that Mark Rippetoe is a god.