That isn't the point of education, at least it's not supposed to be. And I can't agree with accepting that as "well that's just how it is". We're paying to educate children, we should get educated children.
I agree that it's not what it's supposed to be, but that's what it is.
I'm overstating the case though--we do, for the most part, graduate people who can read, write and understand basic arithmetric (althuogh the jury is stil out on spleling). But kids don't spend much time on the Three Rs. Most of it is inculcation of important societal values. They spend a good chunk of the day learning about sharing and the environment. For instance, it's part of teh science curriculum in BC to "recognize the significance of celestial objects to First nations cultures."
I'm a scientist and my wife has a degree in math. So it's no surprise that my kids are good at math. My son just started Grade 5, but we work at home on basic algebra--Grade 7 or Grade 8 stuff. It would be nice if they challenged him at school but they are more interested in cultural diversity and punctuality.
Just my two cents anyways.