Apparently this is about PISA rating and Poland's "swift rise" in it - so: 1) it's verifiable 2) it's probably more about having good average than having some

Apparently this is about PISA rating and Poland's "swift rise" in it - so: 1) it's verifiable 2) it's probably more about having good average than having some students be super-smart 3) it says more about PISA than Poland