I've been lurking here for a while but finally made an account because I want to share what actually worked for me after two failed attempts at the PCB (Professional Certified Buyer) exam. My scores were 68% and 71% — close but not close enough. I was studying the wrong way: just reading the study guide cover to cover and hoping it would stick.
What changed everything was switching to active recall. I started doing a PCB practice test every single day for the last three weeks before my third attempt. I'd time myself, review every wrong answer, and actually write out WHY the correct answer was right. That forced me to understand the logic, not just memorize terms. I also found that supply chain risk and supplier evaluation questions tripped me up way more than I expected — those are worth drilling hard.
Scored 81% and passed with room to spare. Happy to answer questions if anyone's stuck in the same spot I was. What's your current study schedule looking like?