Calpurnia attended the First Purchase African M.E. Church in "To Kill a Mockingbird." This church was predominantly attended by African Americans in Maycomb.

Calpurnia's note was from her saying that Caesar should not leave the house on the ides of March because she had nightmares that something bad would happen to him.

Calpurnia's nickname was "Cal".

Scout learns that Calpurnia is proficient in reading and writing, which surprises her because she had assumed that Calpurnia was illiterate. This discovery challenges Scout's preconceived notions about Calpurnia's education and capabilities.

Jem decides that the reason Calpurnia mentioned about colored folks not showing their ages so fast is due to the hard lives they lead, facing struggles and hardships that contribute to them looking older than their actual ages.