Oh please, spare the children from the culture wars.

What kids need to learn in sex ed in public schools are basic facts, including that some people are heterosexual, some people are transsexual, some people are intersex, etcetera.  

What they don't need is the "research suggests", "is associated with", and "offers partial explanation" of scientific theory.  Students can study neurobiology in university if they want to.  In sex ed classes in public schools, simple scientific facts like condoms prevent the spread of disease is what is appropriate.