Welcome in the forum ! OldAppy
Now these days safety is a big issue and you expect an electrician to do a good and safe job.
It is not good practise to drop standards of workmanship and knowledge to achieve good pass rates in examns.
If you fail an examn sorry, next time put a bit more effort in it and you will pass, at least that is the way I look at it.
It is a shame that the teacher who set that 24% pass rate examn got the sack, to much PC from higher up obviously.
Wellington bureaucrats are a pain and only create more paperwork and costs to keep licenses up to date, and keep their own jobs safe.