"Does "academic freedom" include teaching astrology and alchemy in science class too?"
They are as valid a belief system as evolution, choose your poison.
No, they're not. Alchemy and astrology are demonstrably erroneous pseudosciences. Evolution is a demonstrably factual scientific theory.
I am going to guess your concept of evolution includes lizards morphing into fish and apes successfully mating with humans.
The "Creatinoid Theory of Evolution" (CToE) is most assuredly a "belief system".
Fortunately for science the real ToE is firmly based on 150 years of evidence.