

The answer is more complicated than other comments would lead you to believe. Before I get into all that, please know it doesn’t matter. Especially, when it comes to 14 year old kids who are playing JV sports at school.
First, the problem with studies is that there are very few trans athletes to study. Some studies have only one or two subjects.
Studies show that there is both an advantage and a disadvantage depending on what sport we are talking about and how long the athlete has been on hormones. Weightlifting and other strength based sports do tend to give an edge to trans women. However, cardio sports such as swimming and running put trans women at a disadvantage because they now have smaller muscle mass for their larger frames.
To me, it doesn’t matter. The camaraderie and other things that kids get out of sports is more important than who wins and who loses.
Seems like a form of kidnapping to me.