Originally Posted by Schabesbert
Why doesn't that seem to include such propaganda as "Heather has two mommies?"
You raise an interesting question. This comes under the category of "controversial subjects." Deciding how schools should handle them is not always easy.
The quick answer to your question is that teaching children at an appropriate age that "nontraditional" families exist is teaching a reality of life--and by itself is religion neutral. As such, that doesn't cross a church/state barrier. Now, I haven't read "Heather Has Two Mommies," so I don't know how deeply it goes into acceptance issues.
The problem comes from the discussion and questions that inevitably arise following such a story. Certainly, some children may recount religious teachings that indicate same-sex coupling is wrong. If the school's response is to indicate that same-sex coupling is not wrong, and should be accepted--rather than merely presenting it as something that exists--it is teaching a value judgement rather than a fact. That ground is more shaky.
To me, this is different than something like the evolution issue. Done correctly, students will have been taught the foundations of scientific enquiry, the scientific method, and the importance of arriving at conclusions based on evidence. Students who raise religious objections to evolution, can, and should be answered with the values neutral explanation of what the science shows.