I know someone else said this upthread, but I think it's worth repeating - a lot of this dangerous nonsense is rooted in the idea that science, somehow, can't really be trusted. That it's arrogant, pretends to know everything, when really it doesn't, and doesn't give due respect to ideas that can't be tested in the lab, etc. etc.
This is such a common misunderstanding of how science actually works that I think it should be directly addressed in schools.
Before they start learning about photosynthesis and the life cycle of frog spawn, children should be taught about what the scientific method actually is, how it works, how it polices itself and why we can trust it's conclusions.