Sorry if those rates scared you - they have been posted and discussed elsewhere in this forum - if you look at them they only apply to a subset of exams takers - military personnel. Furthermore, if you look at the pass rates of the users of this forum for Prin of Finance it is much higher.
So ignore those rates - they are merely one input source to consider as to the level of effort that someone might want to invest in passing certain classes! I would take other IC'ers guidance over that data anyday.
