Agreed 100%. I chose to send my kids to Christian private schools. In that same token I would expect public schools to exclude any religous teachings or ideas. LGBTQ is a whole seperate issue and should be accommodated in the public school sector.
New twist now in states like Indiana that now have school choice scholarships (vouchers). Now that religous schools are accepting public funding I expect some change. How does the old saying go? You let a camel stick its head into the tent, pretty soon the camel lives in the tent or something like that.