What does Scout tell her teacher about Walter Cunningham? How does she know about the Cunningham family? What details in this section suggest that the Cunninghams are people of principal and dignity?

Ms. Caroline wants to lend Walter some money for lunch. Walter is livid. Scout interrupts and explains how the Cunninghams work. Walter comes from a proud family. Although they live in relative poverty, they refuse to borrow money. Walter refuses to borrow the lunch money that Miss. Caroline wants to lend him.