Religious education does not inherent mean bad education, you're right. But we're talking about parents teaching their kids that Jesus rode dinosaurs.

This science reader examines dinosaurs from a Creation Science viewpoint. Discover how fossils are formed, dug up, and assembled for museums. Travel with the dinosaurs as they board Noah’s Ark and then enter the strange new world after the Flood. Find out what happened to the dinosaurs and if there are any alive today.

This isn't education, this is indoctrination. And I'm not cherry-picking here. That was from the first result from Google for "home school books", and the first (claimed) high-school level book I saw in their "Creation Science" section. And the only evolution-related books they offer seem to be titled things like "Evolution: The Lie".