Atticus and Aunt Alexandra both have strong opinions about how the Finch children should be raised. They want them to be raised morally. However, each has a different idea of what that looks like. Aunt Alexandra worries about Scout being a tomboy.
Atticus believes that children should be given some leeway to grow up. This is demonstrated by his uniquely hands-off approach to child-rearing.
Jack, she minds me as well as she can. Doesn't come up to scratch half the time, but she tries. (ch 9)
Atticus and Aunt Alexandra argue about how he raises his children. She objects to the fact that they have not been given to feel a sense of superiority because of their name. She also does not like the way Scout is not very feminine.
Aunt Alexandra was fanatical on the subject of my attire. I could not possibly hope to be a lady if I wore breeches; when I said I could do nothing in a dress, she said I wasn't supposed to be doing things that required pants. (ch 9)
In their own way, each has the children’s interests at heart. Aunt Alexandria worries that Scout will not by lady-like enough. She worries that others will look down on the children, and this will hurt their chances in society. Atticus does not concern himself with such things. He just wants his children to respect all kinds of people and have moral courage.
Aside from growing up on Finch's Landing and being siblings, Atticus and his sister, Alexandra, have few similarities throughout the novel. However, both characters care about Jem and Scout and attempt to guide the children in the right direction. Atticus and Alexandra both lead by example and encourage the children to follow in their footsteps. Atticus and Alexandra are both intricate parts of the community and are viewed with respect from their peers. Atticus earns admiration for his intelligence and even represents Maycomb County in the Alabama legislature. Aunt Alexandra also occupies a respectable position in Maycomb and regularly holds missionary circle meetings at the Finch residence. Both Atticus and Alexandra share high moral expectations for Jem and Scout. Despite Alexandra's prejudice, she expects that Jem and Scout act polite and represent their family properly throughout the county. Atticus also agrees with Alexandra that Scout needs a female influence in her life and ends up inviting his sister to stay with the family for a while.