Teach kids about consent, biological reproductions and how to avoid making Abbies / getting STDs.
The rest is private. How creepy and sinister if a bureaucratic organisation, such as state education involves itself in matters that are simply private.
Shoving sexual content down their throat in front of teachers and peers at school compromises the human dignity of children in my view. We have lots of conversation about sex ed at home, I know how to pitch it for my kids so they feel in control and empowered, not grossed out. They hate sex ed at school because it's so embarrassing for them. And ours isn't even teaching the dodgy stuff.