There is no "All things Being Equal".
Test scores is a direct reflection of and a correlation to "wealth".
Soccer is a an expensive sport and the success is directly reflected in the communities that is is funded.
The only peak and valley that occur in womwns soccer is the communities that are in the middle of the wealth distribution.
Wando, Riverside, Mann, Irmo, Etc will always have good teams.
Historically minority schools will always be at the bottom of womens soccer.
But they will always have excellent basketball programs. One basketball split between 10 players who compete in the same clothes they wear every day for school is alot more economical than what 10 soccer players would cost, a pair of predators you can only wear on the pitch is twice what a pair of Jordan's cost.
Thats not to say they cannot produce a quality player at any school but I am talking about teams. That is why you see people complaining about JL Mann. Whom is being recruited there? Smarter females who are going to have the training to help the team or whom can get the training.
How many of the Mann players are actually from the assigned attendance area for JL Mann? Would that affect their performance if they could only play where they are assigned?
Its all nice and heartwarming to keep thinking that our teams are good because of happenstance but the soccer world revolves around money on all levels.