I posted a question on the kaplan message boards (thru Q bank) and the administrator responded that 65% on Q bank is pretty confident for passing, 70% is approximately getting the mean (217), and 75%+ is equivalent to 240+. Hope that helps. I haven't received my score yet (took it a few weeks ago), but my 1 practice NBME (form 3) 1 week before the test followed those scores very accurately for my last 400-500 q bank questions. Hope that helps!