(Not subtooting anyone on here but, seriously, never read blog posts or comments about Omelas.)
@okiekiki My other favourite LeGuin story is "The Author of the Acacia Seeds" - which might also be good for first-year composition students, now I think of it.
@ghost_bird Total side note: One semester, I read Omelas out loud to my first-year composition students on the last day of class. They were absolutely _riveted_. Such a good story.