I believe very strongly that this does far more harm than good. This truly poses a risk to girls especially since a biological boy is generally able to overpower the female sex. Without being able to question the validity of how a young person truly identifies and which sex they are attracted to, how can you offer protection to those who want natural privacy and safety? School age kids, especially middle schoolers are extremely susceptible and going through so many emotional and biological changes naturally, that they are very easily confused. Would not want my child to be pushed in a certain direction based solely on any awkward changes that are very natural in the development of their biological sex.