In the novel To Kill a Mockingbird, why does Calpurnia take the children to the church? What do they learn about the Tom Robinson case?

In Chapter 12, Atticus leaves for Birmingham because the state legislature was called into an emergency session. Calpurnia decides to take the children to her church, First Purchase African M.E., rather than let Scout and Jem go to their regular church without Atticus. Calpurnia remembers the shenanigans the children engaged in the last time they went to church without Atticus and were missing their Sunday school teacher.Calpurnia tells the children that Atticus didn't mention...

In Chapter 12, Atticus leaves for Birmingham because the state legislature was called into an emergency session. Calpurnia decides to take the children to her church, First Purchase African M.E., rather than let Scout and Jem go to their regular church without Atticus. Calpurnia remembers the shenanigans the children engaged in the last time they went to church without Atticus and were missing their Sunday school teacher. Calpurnia tells the children that Atticus didn't mention whether or not their teacher would be there, and decides to take them to her church.

While the children are in church, Calpurnia tells them about the crime Tom Robinson is accused of committing. Scout tells Calpurnia that she is aware that Tom Robinson is in jail for doing something awful, but doesn't understand why Helen can't find work. Calpurnia tells Scout that nobody wants to be associated with the Robinsons because Bob Ewell accused Tom of raping his daughter, Mayella. Scout knows that the Ewells have a terrible reputation and doesn't understand why the community won't hire Helen. Scout then asks Calpurnia what rape is, and Calpurnia tells her to ask Atticus.