> I'm sure if you talked to any teacher, they'd tell you they would prefer a more balanced selection of primary school teachers.
That's a different matter. One may wish there to be more male teachers, but that does not mean one considers the lack of male teachers a problem with the industry.
>> after looking at the individuals, more of them may belong to one group than another
> What does this mean?
I thought this was self explanatory but obviously not: after evaluating each individual on the basis of their merits, one may discover that many of the individuals who have been found to excel may belong to the same group.
> That line of thinking inevitably leads to saying men's brains are "wired" to "think a certain way", which has been proven false each time it's brought up.
Pardon? Male and female brains have massive differences in the amount of gray and white matter for one thing [1], connectivity [2], and size [3]. Sex is a biological construct that is very much a real thing.
[1] http://www.sciencedaily.com/releases/2005/01/050121100142.ht...
[2] http://www.theguardian.com/science/2013/dec/02/men-women-bra...
[3] http://emilkirkegaard.dk/en/wp-content/uploads/Helmuth-Nybor...