mich guv whit offers simple undeniable solution:
sports in two divisions:
1. menstruating people
2. non menstruating people
https://www.washingtontimes.com/news/2022/jun/22/gop-challengers-seize-michigan-gov-gretchen-whitme/
How about each student-athlete has to submit to a blood test? If the athlete has a Y chromosome, HE (and scientifically, there is no doubt that the person is a male) must compete with the males, regardless of the mental illness involved that makes him think he is a woman.
For me it’s even simpler:
1. XX
2. XY