[acenes]

It seems most commenters here think that the results can be explained by bias (e.g. on the part of teachers), or cultural factors / environment (e.g. schools are set up for women to do better), or personality differences (e.g. girls are more obedient etc), and so on. But isn't the most straightforward explanation that women are simpler smarter than men on average?

[dudul]

Can we apply the same logic and say that women are not as successful in their career because they're not as good in a professional setting as men?

Maybe there are so few female inventors because women are not as good at inventing/creating things?

Also, this is assuming grades are good at measuring how smart someone is.