Someone told me that of the people that enroll, 80% will show up to the exam and of that percentage 40% will approximately pass level 1.
Even with standardiisation, it feels unlikely that 70% of the people would have difficulty with the mock exam's level of questions. Looking at the scores everyone is posting on the forum no one seems to get below 70. I guess the sample of scores maybe bias as people with generally good scores may post. I don't know...I'm clearly over thinking this and wigging out!