So I found a PDF copy somewhere to have an informed opinion. The whole excerpt about anatomy is completely text. There is a male/female symbol at the bottom with Anne and Peter portrayed on them, but other than that, there isn’t any sort of graphical representation of the passage.
The next page has a full page panel with no text and it looks like Anne lecturing Peter in a school setting, with her pointing at a projected image of a spiral, but again nothing even suggestive.
I have heard other people claiming there is a scene of molestation - there is not. There is a scene where Anne saying she saying she wanted to kiss one of her platonic girlfriends (which was in the book, though originally that part was left out in earlier editions) combined with text/image of her suggesting the two show each other their breasts (which I don’t think was in the book explicitly). And the next page saying she was in ecstasy every time she saw a female nude (like art nude), and " If only I had a girlfriend!" The extra details were added and not from the book, but again, there is no graphic representation. Nothing salacious or risque. Nothing pornographic like some people are accusing.
People really need to grow up. I am pretty sure the kids could handle this (if not 8th grade, certainly 9th grade, even if the adults can’t. Anne is at the same/similar age and they are both going through turbulent time of puberty - she just had the added tragedy of doing so in the middle of a war and genocide 
I hope to get to read the whole thing later. It looks well done.
