I know why they do it, because the women would complain, but it's not logical, the men need to be trained on how to conduct a bible study with a student, also. If it doesn't matter, why are the sisters doing it? Just to give them something to do? One of you still in should ask any elder why there are those parts, they will say, "To train students on how to conduct a bible study." Then you can say, "So only sisters can conduct bible studies, now?"
Another contradiction in the WTS...