As a single working parent, Atticus does the best he can to raise his two children. He does have the luxary, however of having Calpurnia around to take care of the basic needs of the kids.
Atticus was a great parent figure. In the text, we learn that he wasn't playful or fun, but he did take parenting seriously. What he didn't do in terms of play is he made up in moral lessons. He raised the children to know the difference between wrong and right, injustice and justice. He set a positive example for his kids, while also being fair and loving. To put it simply, he prepared his children for life and growing up. I think that makes him an good father.
