― G. M. Gilbert, American psychologist who worked on the Nuremberg trials
Plenty of kids sat next to me in precalc learning how to calculate mortgage rates and then complain that school doesn't teach useful skills like how to calculate a mortgage. At the end of the day, learning cannot be forced. You can put all the info in front of the person you want, they can just ignore it.
This is especially true after Bush Jr. made it impossible to hold kids back, which was the primary way we worked around a stubborn kid.
We are roughly one generation after No Child Left Behind, and a lot of kids have been educationally left behind. IMO this is not coincidence. Good teachers knew right away the negative effects that program caused.
Obama reformed NCLB a bit, but did not fix the part that incentivizes schools to prefer just pushing kids forward if they are struggling.