I did quadratic equations in 7th grade in the US, in a back woods small hillbilly school in the US. With that said, I've generally heard foreign students equat

I did quadratic equations in 7th grade in the US, in a back woods small hillbilly school in the US. With that said, I've generally heard foreign students equate the junior year of a math degree at college to their senior year at high school. I don't dispute your general point.