@roethlisburger, you wrote:
„… the PISA tests aren’t a particularly useful data set, for determining what percentage of kids are ready to be skipped a grade. The US public education system is designed to create mastery of specific content, rather than generic “critical reading and problem solving” skills.“
I would say any education system is designed to teach both competency and content. I’d go so far as to suggest that the US system, with its high reliance, at critical junctures, on standardised testing like the SATs or MAPs which are meant to work nationwide for hugely different systems or even schools, and the reverence for the liberal arts model, values competency more than content, but maybe you’d say that isn’t true for K-12.
The PISA survey, of course, being international, cannot compare content across countries, what would be the point of asking US students about Finnish history. So they compare what can be compared, which is competency, and the idea is that it stands in for how well students are taught to learn, not just ow much history (or biology or whatever) they know. (After all, you can always google about Finnish history once you’ve learned critical thinking, right? :p)
But I didn’t refer to the PISA scores to say that they might make a good basis to decide on how many students should be skipped. I agree that that would be ridiculous.
The point I was trying to make was more fundamental:
There is a narrative among educators in a lot of Western systems (certainly most that l am familiar with):
that a large majority of children can be served educationally by assuming that at a given age they work at a given level and will progress at a given pace, and that there are only a few outliers to the top and bottom who are not being served well by this model (special ed students, though I have heard even that contended - “everyone is different, just differentiate!” - and the “truly gifted”, variously called 1 in a 1000, 1 in a million, or “little Mozarts and Einsteins”)
and that all differences that are observable are being artificially created by economic circumstance, ie heterogeneous societies, heterogeneous school systems or, as the parents of gifted kids tend to be accused, by “pushing”, “hothousing”, pick your favourite term.
And the international survey shows that this is just not true. It is not even a majority that works at a any “grade level” in any kind of society and any kind of system (ie with reference to a test that considers 40 points a grade level, within +/-20 points of the average), it’s more like 30%, and then maybe another 15% about a year above or below, and then maybe another 10% +/- 2 years…looks suspiciously like a bell curve, doesnt it.
Differences can be minimised in a fairly homogeneously affluent society with a homogeneous school system by supporting weaker students the way Finland does, or just by just teaching everyone badly in a poor country the way Algeria or the Dominican Republic apparently do, but you will never get them compressed to one grade level for the majority of students. In any given system, the strong students profit more than the weak ones (called the “Matthew effect”) and the strong students will always be several years ahead of the weaker ones, even though the weakest students in Singapore do better than the strongest students in Algeria.
So without getting rid of those two myths, you can’t even begin to design a school system that works for the majority of kids, let alone for the “almost everyone” that public school systems should be designed for.