Why does the Protocol permit examiners to opt out of the roster and keep their scores secret?
The Protocol is only concerned with examiners who are or aspire to be on the roster of persons eligible to conduct examinations pursuant to it. If an examiner chooses not to be on the roster, and wishes to keep his scores secret, that is his decision. It is no more the business of the Protocol to weed marginal practitioners from the PDD profession, than it is to establish an elite.