Librarians and teachers in elementary schools treat science fiction as a genre that works best for certain cases, like reluctant readers or kids who like what they called “weird,” “freaky” or “funky” books. https://theconversation.com/sci-fi-books-are-rare-in-school-even-though-they-help-kids-better-understand-science-213436
@estherschindler article is full of generalizations. I'd take it with a grain of salt