May I humbly disagre with you: the passe/fail rate ratio means nothing as long as the evaluation system itself is absolutely inconsistent.
It's more a lottery than anything else. It's not related to proficiency, experience or airmanship.
You are clearly misinformed or are one of the "lottery" winners or even KAL staff, sorry...
It's interesting that every time I'm about to decide to take a look at that outfit I discover that the sad circus is still going on full tilt.