It is rude to laugh at a stuttering kid.
Ms. Jane is teaching  a class of middle school students about public speaking.
Ms. Jane wants to give the students feedback.
Ms. Jane listens to a child that is stuttering through his presentation and makes sure to compliment him on his structure and topic choices.
Ms. Jane listens to the speech a child with a stutter is giving, then criticizes him for his speech being poor and difficult to understand.
The student feels empowered by the feedback Ms. Jane gives him and is less afraid of presenting in the future.
The child is embarrassed and his parents report Ms. Jane's bullying to the school board, and she is put on unpaid leave while the issue resolves.