William Wisdom Creative Writing Competition - Category 8: Short Story by a High School Student
(The dates on the guidelines in the link are dated 2019 but they have confirmed that they are running it for 2020, just with the same guidelines as the last year)
Age limit: 14-18
A prize of $750 is awarded to the winning student; $250 is awarded to the sponsoring teacher. The Hartwig Moss Prize is funded annually by the children of the late Mr. and Mrs. Hartwig Moss, IV in their memory.
Requirements: original work of fiction of less than 2,500 words. Entries must have sponsoring teacher or school, preferably both. $10 entry fee to be paid by school or, in case of home-schooled students, by teacher.