Of course Shanghai and Hong Kong are not separate countries, but even without them UK will be 24 instead of 26.
Since 1999 i was many time in South Korea, i spent there alltogeher over one year and everybody there is working very hard and childrens are learning very, very hard.
Interesting here is the fact, that childrens in South Korea are learning so hard, but the difference between Korea and best european countries is very small.
Reading: Place 5 S. Korea 536, 6 Finnland 524, 7 Ireland 523, 10 Poland 518
Science: Place 7 S. Korea 538, 5 Finnland 545, 6 Estonia 541, 9 Poland 526
Maths: Place 5 S. Korea 554, 8 Liechtenstein 535 , 9 Switzerland 531, 10 Netherlands 523
It means for me, that few european countries found the way to teach childrens in more effective and probably more pleasant way and UK should look at those countries and not on IMHO "economically militarized
" asian countries.
Not just blind learning, learning, learning. Skilfull pedagogic methods are more effective.