Comparing those 2 datasets is meaningless. It’s just an exercise in how good the researchers are at guessing when trying to control for selection bias.
There were also significant changes in the test and how the test was administered (from computer or paper to only tablets).
Also if you look at the results some of them are too large to be readable. A 50% increase in people operating at or below level 1 (40% if you exclude non-native born). That would have to mean a drastic drop in 2017 such that something like 75% of kids graduating high school are doing so at or below level 1.
Also level 3 has no direct grade equivalence. If it did it would probably be around 9th grade not 6th.
Not a rhetorical question. Outside of my family and self, and perhaps a livable planet, liberal democracy is the most important thing I can possibly imagine. I know I'm not alone. So what do we do?
Edit: Replies seem to indicate that people think I meant for this to be about the US. It's not. I'm in a well-functioning European democracy, and my worry definitely applies here too.
My big fear is that too many people will just go "phew, glad that terrible epoch is finally over, never to return again" :-(
Unless the US plans to unconditionally surrender to China, one of two things will happen:
1. it will start investing into education in an effort to compete by itself
2. it will roll all of this shit back and reform ties with Europe in an attempt to play the numbers game
Source: England.
Is alliance with Europe a help or a hinderance in a war with China? Lot more target area, not a lot more offensive capability.
I'm not as certain about Taiwan, but I believe that the CCP would rather have a peaceful "reunification" there as well. As long as that's not possible, it's probably sufficient to be ambiguous about the whole deal as we've been doing thus far. Remember, Hong Kong fell because the lease expired, even though it's pretty unlikely the UK still had the muscle to hold it by force in its later years.
Instead we're probably heading towards another cold war, in which trade, diplomacy and quality of life plays a heavier role than raw power. In this scenario, AI doesn't actually help anyone gain a competitive advantage since it will be stolen almost immediately (it took the russians what, two years to steal the A bomb?).
And with all other things being equal (to be clear, right now they're not, or at least not in your favor), you'd still lose because you're outnumbered 4 to 1.