But we know that it’s true. That’s why we have been using objective metrics like test scores for millennia, across societies are different as China, India, and Britain.
Your best argument is "we've done it for a long time, so it can't be wrong"?
Quite the contrary: there is a long history of "objective" tests being shown to be deeply flawed and biased towards certain factors (often cultural and class based), we explicitly know it isn't the case that test scores are purely about some innate intelligence characteristic: there is a reason the rich spend a lot of money to raise their children's scores.
My secondary school claimed to have the best results for Business Studies A-levels in the country. They achieved this by taking the pre-released case study, writing every possible question they could think of about the study, writing model answers, and telling the students to memorise them. The idea that these scores represent some innate intelligence of the student is obviously nonsense if you interact with the system at all.
It is strange to pretend that there is no cultural bias and then given an example that is usually explained because Asians seem to culturally value more education than white British.
How will you explain that Asians outperform white British otherwise, knowing that the idea that Asians and white British are genetically different enough to explain this has been scientifically debunked, or that adopted Asians don't show the same pattern as not adopted Asians?
(and, yes, of course SAT is highly predictive of college performance, isn't that the point: people who get better training get better college performance while not being "smarter", just "better trained")
I’m talking about the supposed cultural bias of the test itself, not cultural differences among test takers. A culturally biased test is one that requires familiarity with a particular culture, generally that of the people who wrote the test. If Asians do better on a test developed by British people, that suggests that the test itself is not culturally biased.
Your argument would have been more convincing if the Asians were getting the same as British people.
But as soon as the Asians do better, it means that the whole comparison is meaningless. It means that Asians and British scores differently. Maybe Asians normally should score 14 and British score 10, but they score 12 because the test is culturally biased.
(sure, we expect that a small difference in "normal situation" should be relatively small, but the samples are defined as biased, so you cannot really rely on them unless making unproven assumptions)
You could fairly say that China’s pre-Opium Wars obsession with testing and meritocracy based on said testing is what brought them into all that mess, I’m pretty sure that the Portuguese that had gotten all the way from their small country all the way to Southern China using some stingy boats were not clerks nor great (potential) test-takers, and yet it was those Portuguese seafarers that were to change the fate of most of Asia forever, not the test-taking Chinese.
We’ve done all sorts of dumb things for thousands of years.
It’s one metric of many. We know that paying for a tutor can change test scores. We know that a shitty home life can, too. They’re just harder to measure.
If you’re suggesting that having “a shitty home life” can make people perform badly on tests, but not perform badly in real world tasks, we don’t “know” that. It’s something people want to be true, but there’s not much evidence for it. Meanwhile, there’s reams of evidence that standardized tests scores are highly predictive of performance.
Okay, but where is the evidence that those people perform better in real world tasks than their test scores would indicate once they are no longer in that shitty home life?
I'm confident you're a better judge of the worth of A-levels than the people who've never even taken them furiously insisting they're objective indicators of merit, and not high school syllabus-recollection/essay-writing tests which are easily taught to, actively fudged by some schools and greatly variable in actual difficulty from one subject and exam board to another.
Still, your grades (and mine) pale in comparison to all these youngsters with an opportunity to get A* grades...