Our school offers - 2nd grade math for 2nd graders. Period. NO GT program, no acceleration. My son brings home math fact practice quizzes... with addition. The kid can add fractions and understands basic probability. If I could homeschool him, I have no doubt he'd be up to complex multiplication & division. The bar is set too low.

I did Geometry/Algebra2 together as a freshman, then precalc, then Calc AB as a junior (first ever in my school). Had to take calc 2 at a local university my senior year. But when I got to my Ivy League school, I was so far below where I thought I was, I couldn't keep up in Linear Algebra & Vector Calc. I had to realize that I was just not smart enough although I was the best in my class in HS.