She and her mother say that is not true, and the officials kept changing the requirements.
I don't know who is telling the truth, but it does not appear to me that the unitard would give her a competitive advantage; if anything, the opposite.
I really don't see the problem, and the tone of some of the posts here is really rather offensive.
Again:
The girl chose a team sport - for which she would be expected to wear a team uniform.
Nobody is demanding she run and represent the school in the regular team uniform.
If she wants to be a member of the team - she must conform to the regulation uniform - therefore guaranteeing all competitors are equal.
It’s a team sport!