At the Resolution stage of plot; it would be expected to be read this passage.
A story's structure is made up of several elements. The fight is the primary topic covered in the narrative. The characters' behavior toward the conflict is the rising action. The climax is the moment just before the resolution, creating tension as we wait to find out how the conflict is resolved. And finally, the resolution is typically the last part of the story, and it explains how the conflict was resolved. The fact that Malia did well on her test after putting in a lot of effort to prepare is the case's resolution.
Mary tells John that if he testifies against her, she will "charge lechery" and ruin him. What does John decide to do? He tells Mary that they will both testify in court against Abigail. Although it will ruin him, he can't allow Elizabeth die.
His mentioning that community and individualism are constantly at odds "supports Quindlen's key metaphor: we are a multicultural nation of diverse ethnicity, but we are unified as one people under one government."