Let’s look at three points:
The three-part qualifying examination to be an ADI is a summative assessment of the knowledge, skills and understanding the potential driving instructor (PDI) has of the National Driver and Rider Training Standard. These are the standards that are set by the DVSA, against which PDIs are tested.
Therefore, it follows, that the training (whether the PDI takes this formally or trains alone) must be around developing the knowledge, skills and understanding of the National Driver and Rider Training Standard.
If you are against the Standards Check replacing the Part 3 then you might be overly concerned about individuals learning the ‘content of subjects’, rather than recognising that the most important thing is the ‘skills that need applying’ to any situation – the ‘skills’ that are robustly assessed with the seventeen competences that make up the Standards Check. The subject is irrelevant. Therefore, it is perfectly acceptable for the candidate to prepare the subject they are most familiar with on a route they feel comfortable with – because they still must demonstrate ability in seventeen competences.
It is about looking at the bigger picture and keeping the context in mind.