The practical issue which so many people don't seem to want to acknowledge is that students are different. I have taught and there are some students that simply lack either the intelligence, discipline, interest, or some other aspect that makes it literally impossible for them to ever receive anything beyond a basic education. You could give them 10 on 1 specialized instruction from the the most competent/interesting/engaging teachers and tutors imaginable, and they're still just not going to excel.

And then on the other end of the spectrum there are kids who will proactively read, on their own, through e.g. their math textbook, understand everything with no difficulty, and basically get nothing academic out of their education (beyond that which they'd get from simply having the books) unless one engages in extreme 'differentiation' which is an educational buzzword that is basically just glorified in-class 'filtering' that imposes a massive workload on teachers, creates inequity within the classroom itself, and is really just quite dysfunctional.

And so the typical results of trying to give an advanced education to everyone is that you end up pulling the top down, rather than lifting the bottom up. This is even more true because the bottom is also often disproportionately filled with students who have extreme behavioral problems often alongside families who just don't particularly care about their education, while the top is rarely disruptive except for the smart-ass type who's generally just trying to get some giggles rather than being actively hostile.

---

I think seeing things as a teacher makes you view things radically different than you do as a student. You're probably one of those overachiever types given your comment, and perhaps you feel that you worked a bit harder, maybe were a bit interested in the material then your peers or whatever. But I can assure you - that's generally not it. There are kids that try hard, even some that get things like multiple in-home tutors, and they still just can't excel no matter how hard their parents, or they, try.

---

Edit: Just found this [1] interesting Wiki page. You can see the list of countries, by gold medals in the last 10 Olympiads. In order of medals: USA, South Korea, Thailand, Russia, Vietnam, UK, Iran, Canada, Singapore, China.

[1] - https://en.wikipedia.org/wiki/List_of_countries_by_medal_cou...