Subject to this Part, the Authority must investigate a complaint from a member of the public alleging any breach of an obligation under these Regulations to implement any of the principles in section 1.2.1(a), (c), (e) and (f) of the Act by—
(a) a registered school; or
(b) a person, body or school registered under Division 3 or 4 of Part 4.3 of the Act.