I've been lurking here for months and figured I owe it to this community to share my experience since so many posts helped me. Failed the AQL exam back in October, then again in January, and honestly almost gave up. The second time I scored a 71 when you need a 75, which stung more than the first fail. The problem was I kept studying the wrong things — I was memorizing sampling tables without really understanding the logic behind acceptance number calculations.
What finally clicked was slowing down and treating it like a conceptual exam, not a memorization one. I started using an AQL practice test that actually explained WHY answers were wrong, not just what the right answer was. That changed everything. Spent about 3 weeks, maybe 90 minutes a day, focusing on AQL levels, inspection levels, and switching rules.
Passed with an 82 last month. Happy to answer questions if anyone's stuck on specific topics — switching rules and tightened/reduced inspection tripped me up the most.