> there are plenty of less sensitive topics that can be covered in high school biology <
I agree. There is no real value in examining any of this. No real value at all. All it can do is further Balkanize the classroom and the country. And I say that as a trained scientist (chemistry).
The problems will come when the research doesn’t support liberal ideology. They would resort to lies and half truths to cover up and change the facts that refute the liberal agenda. They don’t want honesty.