Comment by no_wizard

>But you aren't supposed to choose either or. Instead, you split the students in different groups, different speeds.

This answer is from the US perspective. I've lived in several states now, and I know many of teachers because my partner is adjacent to education in her work and family. This is what I've learned from all this so far:

This is an incredibly easy and logical thing to both suggest, conceptualize, and even accept. In fact, I can see why alot of people don't think its a bad idea. The problem comes down the following in no specific order:

- Education is highly politicized. Not only that, its one of the most politicized topics of our time. This continues to have negative affects on everything to proper funding of programs[0]

- This means some N number of parents will inevitably take issue with these buckets for one reason or another. That can become a real drain of resources dealing with this.

- There's going to be reasonable questions of objectivity that go into this, including historical circumstances. This type of policy is unfortunately easy enough to co-op certain kids into certain groups based on factors like race, class, sex etc. rather than educational achievement alone, of which we also do not have a good enough way to measure objectively currently because of the aforementioned politicized nature of education.

- How to correct for the social bucketing of tiered education? High achieving kids will be lauded as lower achieving ones fall to the background. How do you mitigate that so you don't end up in a situation where one group is reaping all the benefits and thereby getting all the social recognition? Simply because I couldn't do college level trig when I was in 8th grade doesn't mean I deserved limited opportunities[2], but this tiered system ends up being ripe for this kind of exploitation. In districts that already have these types of programs you can already see parents clamoring to get their kids into advanced classes because it correlates to better outcomes.

[0]: I know that the US spends in aggregate per student, approximately 15,000 USD per year, but that money isn't simply handed to school districts. If you factor specialized grants, bonds, commitments etc. the actual classroom spending is not working with this budget directly, its much smaller than this. This is because at least some your local districts funding is likely coming from grants, which are more often than not only paid out for a specific purpose and must be used in pursuant of that purpose. Sometimes that purpose is wide and allows schools to be flexible, but more often it is exceedingly rigid as its tied to some outcome, such as passing rates, test scores etc. There's lots of this type of money sloshing around the school system, which creates perverse incentives.

[1]: Funding without strict restrictions on how its used

[2]: Look, I barely graduated high school, largely due to alot of personal stuff in my life back then. I was a model college student though, but due to a different set of life circumstances never quite managed to graduate, but I have excelled in this industry because I'm very good at what I do and don't shy away from hard problems. Yet despite this, some doors were closed to me longer than others because I didn't have the right on paper pedigree. This only gets worse when you start bucketing kids like this, because people inevitably see these things as some sort of signal about someones ability to perform regardless of relevancy.