Final answer:
Aunt Alexandra does not want Scout to invite Walter Cunningham to their home because she believes it would tarnish their family's social status.
Step-by-step explanation:
Aunt Alexandra does not want Scout to invite Walter Cunningham to their home because she believes that the Cunninghams are not of the same social status as their family.
In the novel To Kill a Mockingbird, Aunt Alexandra places great importance on reputation and social class.
She believes that associating with people from lower social classes would reflect poorly on their family.
Aunt Alexandra is concerned about maintaining their family's image and does not want Scout to form relationships with those she deems inferior.