Not using the spark notes...
I think in the manufacturing sector this may be called ....FINITE CAPACITY.
There are only so many qualified coaches out there, some of whom may wish to only work with boys.
So equality would assume equal number of quality coaches available who have no preference on gender (as far as coaching... I am not opening anything here).
Since this is not the case and since the parents have a say, you can get the best coach if it is in his/her benefit to coach the team. This could be monetary, prestige, status within the ranks, etc.
But alas, as coldhardtruth said... if you do not have the basics between the ages of 9 thru 12 nothing else matters.
It has been my humble, not expert opinion that girls tend to be more tactically savy than boys at an earlier age, boys tend to be more technical. The difference... is the social aspect as girls tend to work better together while boys tend to be more individualistic. Not until boys get to the 13 and 14 years of age do you see tactical awareness become more prevalent.
Lastly boys tend to take more risks than girls.
Thus I deduced that many good coaches who enjoy teaching the tactics would migrate towards boys as they are apt to have the individual skills necessary to carry the tactical training.
Now all this plus a quarter still does not get you a cup of coffee.
