IIQE & MPFE difficulty: which paper is actually hardest?
PEAK does not publish pass rates for the IIQE or MPFE — so nobody can quote an official difficulty figure. What we can do is measure it. The table below comes from 76,458 real practice answers by 847 devices across our five apps.
PEAK, the body that runs the IIQE, does not publish pass rates for any paper — figures circulating online carry no official source. What can be measured is relative difficulty: across our practice data, IIQE Paper 1 sits at 65.4% accuracy.
Which IIQE paper is the hardest?
By practice accuracy, IIQE Paper 1 is hardest at 65.4%, and IIQE Paper 3 is easiest at 75.4%.
Is practice accuracy the same as a pass rate?
No. Practice allows repeat attempts and shows explanations, so it always reads higher than real exam performance. Use the ordering between papers and topics as the signal, not the absolute number.
Practice accuracy is measured from our own apps and is not an examination pass rate. PEAK does not publish official IIQE or MPFE pass rates; any figure presented elsewhere as official should be treated with caution.
