I don't believe in making school compulsory, for most
American elementary and middle school aged children, but that is another topic. Let this suffice: I unschooled my son and when he finally decided to attend school, he was very successful. It worked for him.
That being said, I would hope that literature teachers would include some science fiction titles in the reading lists that they hand out to their students.
Here are a few that come to mind:
"A Wrinkle in Time" - for younger ones
Short Stores from the Golden Age of Science Fiction
contemporary science fiction short stories
"The Lord of the Rings" series - fantasy, I know
Comics books depicting action figures with superpowers
Let the young reader choose ANY title within the genre.
I would also hope that the teacher would read those books and be able to have an intelligent classroom discussion about them!