Calpurnia is the Finch family's black cook since the death of Atticus's wife.Calpurnia takes Scout to church on Sundays and this gives her an opportunity to understand the difference between the whites and blacks in Maycomb.Scout, Jem, and Dill are able to watch the trial because Calpurnia's church pastor makes space for them on the balcony among the coloured peopleCalpurnia is unique in Maycomb, as she is one of the few black residents who is literate.Scout describes her as strict, demanding, and even tyrannical.