You're both right, which of course means you're both wrong.
The right won't accept books that suggest natural selection might have occurred.
The left won't accept books that suggest natural selection might have resulted in differences between people.
The right won't accpet books that discuss sex.
The left won't accept books that discuss gender.
The right won't accept books that mention anyone else's religion.
The left won't accept books that mention anyone's religion.
Easier to just not teach anything.