Post-secondary or grade school.
Math. I sucked at math since 3rd grade and that shit was a struggle all the way through college. I’m lucky i can even count, I swear to God. Had to pass THREE remedial math courses just to be allowed to take the course that counted for actual credit towards my degree. Lately I’ve been contemplating going back to college for a second degree, but I realized I’d have to take shit like pre-calculus for the degrees I’m looking at and I just don’t think I could do it. My brain is such a letdown.
Right there with you. Suffered with fractions in 4th grade, did okay from there until trig in high school (sophomore year?), then failed hard in calc 1 over the course of 5 undergrad tries. Finally got it, but damn, my brain could not handle the theoretical stuff. Maybe methods have changed in 20+ years, but that shit sits with you.