I conduct classes in Biblical law for women. Over the course of almost two decades, I have moderated discussions on the specifics of the Ten Commandments, the case laws of the Old Testament, and their applicability for today. It is not that men would not or could not benefit from these classes. It is just that when women get together and really talk, the conversations often go to areas that a) might not interest men b) might seem trivial to men and c) might embarrass men.
Women, being much more personal in their orientation to things, like to really understand how a certain principle or mandate of Scripture applies to the various areas of their lives, right down to the nitty gritty. I am not saying men do not have this need or that they do not engage in such conversations among themselves, but my experience tells me that the conversations would be much less valuable in a mixed group of woman and men.