And the research on the topic says that tracking (the idea you are criticizing here), improves educational outcomes. What to know the real problem with education? Its people like you who don't have kids and know nothing about the education system driving their own ideology and biases into the system. You have no stake in this, yet you want your opinion heard despite the fact that you put no effort into learning about the topic of education other than going through the system yourself which hardly counts.
PS You don't even know the term for the thing you are criticizing.
PPS By definition, every kid can't be average. So you don't understand statistics either.
I'm a grandparent.
>people like you who don't have kids and know nothing about the education system
You know when I did my student teaching stint to certify? 1993.
PS: You know why they say tracking works? Because we throw out data from after high school graduation. Ever wonder how those, uh, "gifted", kids who got "A"s in high school Calc typically do in Calculus streams at the University level? I can assure you there are many many professors out there dealing with the results of our tracking system, (that being where the proliferation of "gifted" programs came from), who would not say that it is "working".