I can tell you how great my math education was. I don't even recall the quadratic formula or completing the square is. I'm almost certain they were part of the

I can tell you how great my math education was. I don't even recall the quadratic formula or completing the square is. I'm almost certain they were part of the curriculum at some point. I recall in later math course, notably calculus, the teacher assumed we we're familiar with some concept because we we're supposedly taught it the prior year, yet not a single student in the class could recall it having been taught before.