dp showed me this article yesterday, which i think is referring to the same report
www.bbc.co.uk/news/education-31751667
it has this additional comment:
"But there are a couple of big conclusions delivered by the OECD's education guru, Andreas Schleicher.
There is no "maths gene", there is nothing inherent about boys or girls doing particularly well or badly in different subjects.
If boys can do better than girls in maths tests in some western countries - and then girls in Shanghai can do better at maths than those western boys, it shows the variable factor is not gender, but those education systems.
Mr Schleicher says the study shows there is nothing innate, immutable or inevitable about gender differences in education.
There might be a blizzard of overlapping influences - self-confidence, parental expectations, society's stereotypes, gender bias, school support - which can affect how young people behave.
But it's nothing that is hardwired by gender."