"Doctor Jack O'Lantern" is the first story in Richard Yates' ELEVEN KINDS OF LONELINESS, which is one of my favorite story collections by one of my favorite authors. Yates also wrote REVOLUTIONARY ROAD and EASTER PARADE. All three are excellent.
This is a poignant story about a young teacher trying very hard to be a good one and a student who fails both to please her and to fit into his new school. Vinny has come from the City and Yates captures Vinny's part of the city so well by describing how it is the part of NYC that you whizz by on your way to Grand Central and the real New York.
Vinny is a foster child and his new town is not a good fit for him. The teacher has her students tell about their weekend activities and his account is cobbled from the other children's stories. (Actually he shows more talent as a writer than the rest of them). Scorned by his classmates and sad to have disappointed his teacher, he scribbles four-letter words on a wall. There is a point in this story when he almost bridges the gap between the other boys and himself, but his well-meaning teacher derails that moment and his rage will be his downfall.
For those who don't get a chance to read it, Doctor Jack O'Lantern is his misunderstanding of Dr. Jekyll and Mr. Hyde.