To tag on, the only people I've ever seen not pass training were folks that either legitimately lacked the proper skills and/or experience or did not possess the proper work ethic/attitude towards the training event. OR...some combination of the two of these things.

Everyone that I have encountered in the training department has been helpful and genuinely interested in seeing you pass. But if you don't possess that same interest in yourself, it's going to be harder for them to get you through. There is no funny business going on here that I can see.