Final answer:
Atticus tells Jem that 'trash' refers to people who act immorally despite education or opportunities, choosing to teach Jem about the importance of personal integrity and character. He wants Jem to understand that moral character is more important than social status in defining a person's worth.
Step-by-step explanation:
When Atticus shares his definition of “trash” with Jem in To Kill a Mockingbird, he is talking about a type of behavior rather than a social status. Atticus explains that “trash” are those people who, despite education or opportunities, continue to act in ways that are morally reprehensible. He uses this moment to teach Jem about the importance of personal integrity and the impact of one's choices on their character.
Atticus feels that Jem needs to hear this because it is a crucial life lesson, especially in the context of the prejudiced and often narrow-minded society they are living in. Atticus is trying to instill in Jem the values of empathy, respect, and understanding, rather than judging others based on superficial criteria. He wants Jem to strive to be a better person and to recognize that everyone, regardless of background, has the potential to rise above negative societal influences.