Those smartest kids can go test out of everything with AP, take SAT courses privately sometimes even for free. Especially with parents that care, they're likely to get into university as a Heritage / Lineage acceptance route regardless of how they perform in high school. Those kids who need more help have no other chance. They have to pass those high school courses with the teachers assigned to them and the tests given to them, no choices given. These experiences like these tilt them away from education entirely.