Red Letter Day — Kristine Kathryn Rusch

Graduation Day at Barack Obama High School. The day the Red Letters arrive, the day that students get a glimpse into their own future.

But a handful never get a letter and no one knows why. One teacher has an idea though: a teacher who never got a Red Letter herself, a teacher finally finds the answers to her own fate.

Called “a fresh, solid, entertaining take on time travel” by Tangent Online, “Red Letter Day” was chosen as the best short story of 2010 by the readers of Analog Magazine.