[leblancfg]

I'm not familiar with the Australian education system or this study's design, but at first glance, this quote

>The report, commissioned by the Alliance of Girls’ Schools Australasia, was conducted by Macquarie Marketing Group using OECD data

reads more to me like "we found that all-girl private schools are better than the average of public and private schools", and the obvious reason why is probably *because they're private schools*, and not because they're all-girl.

[harvey9]

Same pattern in UK state schools

https://www.bbc.co.uk/news/education-35419284

[leblancfg]

Same comment as above. From your article:

> there are some underlying factors skewing these results, such as: > * grammar schools are more likely to be single-sex > * co-educational schools have a higher proportion of poorer pupils > * girls are more likely to get good results