Pro boy bias - you are kidding me, right?
In the primary school where my two (female) children attended, it was dominated totally by female teachers.
It's hard to imagine there is bias in favour of the opposite sex to the teacher, surely? Indeed, given the current climate, teaching is not a profession I think males enter without considerable trepidation.
Maybe we need to address some biases in the system?
Males are different to females. They mature differently, learn differently, and socialise differently. Their brains are slightly different. It's not too surprising that they end up being good at different things. Males seem to excel in tasks involving engineering (have you noticed that males end up doing all the "fixes" around the home/car, despite all this claimed "equality?), and females seem to excel in organisational and social tasks. There are always outliers in any such generalisations, and that's fabulous. But I am tired of bias claims where it's clearly not so - if girls or boys want to study subjects, nothing is stopping them that I can see. (Though I suspect boys get a harder time if they like ballet, than girls do if they like woodwork).
It's interesting to consider how good girls must be if they are suffering such bias - after all, they already outperform boys at school. Imagine how great they'd be if the school system was not based against them.
Or maybe the school system is actually biased against boys.