Teaching both is ok, gives the students a chance to make up their minds or draw their own conclusions.
If the promoters of astrology had their way, then maybe they could get a state to introduce the idea that astrology has predictive power in the lives of people and in the course of national history. If racists got their way then maybe they could introduce the idea that slave owners were -- contrary to 'liberal myth' -- benefactors to 'their people'. Maybe neo-Nazis could push Jew-hating sentiments as 'racial' reality. I think that you know where that goes.
Creationism is pseudoscience on the same level as divination, Afrocentrism, deconstructionism, and Holocaust denial. Junk learning does not belong in a classroom.
Spare me that argument. Unions exist to give working people a means of standing up to corporate bosses and tycoons who care only for themselves, their families, and their cronies -- people who see working people as nothing more than machines of meat. Unions cannot enforce above-market wages; businesses can enforce sub-market, exploitative wages if the political system works for them. "Right-to-work (for much less)" means more profits so that elites can hire more domestic servants. Those are the only jobs that "Right-to-Work" laws reliably create.
The 900 paid 1/3 less will have far less to spend on consumer goods that drive the economy. Profits for the elite do not trickle down; they stay where they go. "Right-to-Work" is the friend of the sweat shop that people might work for a short time in desperation before going elsewhere. It is the consumer economy that drives capitalism; if you don't believe that, then look at the lucrative and cruel economic order of the old South as an example.
I am glad that I have no children to suffer for the sadistic, rapacious, powerful ruling elite of America.