The district was ordered by the court to do this. They have no choice. The only choice parents have is to pull their kids out, start a small private school, or homeschool.
Why isn't the school district appealing the decision in the case to a higher court if they don't agree with it?
You do realize if this sort of thing stands, it is just a matter of time before the government will mandate private schools teach this sort of thing and outlaws homeschooling, don't you?