“I don’t know if they taught history back in Sara Schenirer’s days, but if they did or didn’t doesn’t make a difference. It’s taught out of necessity, no other reason, so yes recent history is taught too.”
I apologize for not making my point clearer. My point was not about things that were changed by necessity. Let’s say that there was never any objection to teaching history and it was taught since the first day of the first Bais Yaakov. Would anyone say that from now on we can only teach the history that was taught at that time but nothing more recent? Probably not because there is no reason not to. Now when Bais Yaakov was started, the metzius was very different than it is today. Additionally, Bais Yaakov at all was a chiddush and controversial enough without introducing Gemara. So what they did then doesn’t really address today’s reality. Now if someone thinks that the reality is the same then fine, but they shouldn’t have any problem if other people disagree (which many of them clearly do as can be seen here in the Coffee Room). Unless they think that it is not possible for the reality to change. Which is why I brought up nishtaneh hateva.