Schools are a social(ist) institution put in place by the goverment to ensure people have an equal access to knowledge - a foundation. Schools also have to follow a certain curriculum which would give this foundation. A school cannot simply choose to not teach reading or writing, or teach that the earth is flat because they beleive this is the right thing to do.
This has come up previously with different topics over the years. In many countries it is explicitly illegal for schools to teach that the Holocaust ever happened, or use text books that alledge this.
And, this is probably a good thing.