Train to proficiency takes many forms. I found that the "sausage factory" school train to proficiency involved the students knowing exactly what was going to happen and when. That doesn't really happen in the real world.
The school I attended turned into one of these sausage factories after vet fee help became available for flight training.
For the MECIR test I only knew which approaches I was going to fly but not the route or order of the test. Now apparently the students literally fly the test route a few times and do the approaches in order they will get them on the test day.
I don't think that is the "train to proficiency" I want out of a fresh CPL holder.