The climax of Shirley Jackson's short story "Charles" comes at the end of the story. Typically, a climax comes well before the falling action and conclusion in a text, but here the climax comes at the very end.
Prior to the climax, Laurie's mother finding out that he is Charles, everything leading up to the parent teacher meeting puts both readers and Laurie's parents (especially his mother) almost on edge as to see what Charles will do next. It is not until Laurie's teacher states that there is no Charles in her class that readers figure out the Laurie has made up Charles and that the behaviors he is speaking about at home are his own.
Therefore, the introduction and rising action takes up the majority of the action of the story. Readers hang on like Laurie's parents waiting to find out what Charles did that day in school. It is not until Laurie's teacher tells his mother that there is no Charles in her classroom where both readers and Laurie's mother come to know the truth. This, then, is the climax, falling action, and conclusion rolled into one given the story ends here. In reality, the story closes with the climax. No resolution or closure is given for the reader or Laurie's mother.