I ran across Lion, Witch, Wardrobe many decades ago in the second grade and can't remember whether we pupils read the book ourselves or were read to. All I can recall of the story itself is that walking into the wardrobe triggered some time shift, which struck me as pretty neat at the time; any theological significance of the plot was lost on me.
A better book I encountered in second grade had tales of Babi Yaga, a Russian witch who lived in a house on chicken legs that rotated when she was away from home. They were terrific stories, and I find it strange that I have never seen any reference to Babi Yaga as children's reading since.
Carl