the girls biggest issue is that they do not have enough competition to develop as quickly as the boys. We've tried to give them equal opportunities but they just do not come out in the same numbers.
I have been trying to find a way to increase the participation rate of girls playing basketball. Heck I would be interested in hearing how to increase the interest of teenage girls playing ANY sport period.
it's not just basketball, we have the same problem with women's MMA, which is odd considering we do have a lot of females in martial arts, very good Olympic standard ones too. Finding opponents for female fighters was a nightmare to start with, it is getting better but it is slow.
Here in the UK Sport England is making a big effort to get into sports, as you say, any sports. there are a number of issues why girls either don't do sport or stop when teenagers, they aren't always that obvious reasons either.
Perhaps something on here could help if you wanted to push a campaign or inspire schools to?
This Girl Can | Sport England
Gender | Sport England