It is unacceptable to bring a weapon to school.
Stan, whose parents have a gun at home, gets threatened by a bully at school and is afraid for his safety.
Stan wants to get some protection.
Stan finds some friends to hang around with, so he's never alone at school.
Stan takes his parents' gun and brings it to school in his backpack.
The bully never gets an opportunity to corner Stan and leaves him alone.
Security finds the gun and arrests Stan on suspicion of planning a school shooting.