BertrandRussell
Agreed.
There are benefits to both approaches:
Designated Head Boy/Girl means that everyone is represented and there is no 'unfairness'
Gender neutral selection process means that the two best people for the job get it, however if it happens to be two boys, people get 'excited'.
I wholeheartedly agree with your point that teenage boys are more likely to be disengaged from education, therefore anything that encourages them to engage in a positive way is going to be a good thing.
Years ago I was that teenage boy who thought education was for girls.