SO many math tests where I gave 100 % correct answers but only made the first 60 %. I didn't even know this was related. Maybe the teachers should have investigated this further. Because it's odd, isn't it? If I were just bad at math, I'd either make many mistakes, or cherry-pick parts of the tests that I can do. But not do the first 60 % and then stop due to time running out. They should also have gotten the hint when they could always ask me something in class and I would know.

This went on at university (which I never finished) and certifications (still passed, because they typically have passing scores of 50 - 70 %).