Also... the growing movement to sexualize other people's children.
It was a high-school level book being read over a broadcast which they wanted to make available for children not at a high school level.
It was being read by a mother of children who weren't in high school, and did not have access to the book.
I read the article you published as evidence, and provided the context showing how you were misrepresenting the story to suit whatever false narrative you were pushing. I'm not sure what agenda you have here, but lying to demonstrate something is never a good sign.
The given quote in the video you linked to was:
"Excited now, he pushed into her, and she squeezed her eyes as tightly as she could, her tongue circling her lips. He pushed harder, his breath heavy and labored. She scratched his back, and he cried out. She bit his ear and pulled his hair."
This is a description of what appears to be heterosexual characters. Nor does it appear to be a "mere depiction". I would reserve that for something like "Heather Has Two Mommies" (a mere description of a homosexual couple) or "Mr. and Mrs. Brown" (a mere description of a heterosexual couple who have befriended a bear from darkest Peru).
My assertion is that I wouldn't expect a book that simply had a gay character in it to receive that response from the school board.
Think of how George shoots Lennie in "Of Mice and Men", or the racism in "To Kill a Mockingbird", or why Hester Prynne must wear a scarlet "A", or when Anne Frank talks about her menstruation. Or the details of the meatpacking industry described in "The Jungle".
They are all taught to high school-aged kids. I don't think most people would want all those details described to elementary school kids.
I can't figured out why your assertion is relevant.
While it may be true, surely you don't think that only white hetereosexuals can be portrayed as something other than milquetoast-bland in high school literature.
Why should I be allowed to deny your children access to books at school?
Nobody came to these parents to tell them "your kid should not be reading X". If parents don't trust/like the curriculum of their local school, AFAIK homeschooling is still an option in the US.