How did Scout learn to write cursive?

Calpurnia taught Scout to write in cursive to keep her busy on rainy days when Scout couldn't play outside.

Miss Caroline caught me writing and told me to tell my father to stop teaching me. “Besides,” she said. “We don’t write in the first grade, we print. You won’t learn to write until you’re in the third grade.”

Calpurnia was to blame for this. It kept me from driving her crazy on rainy days, I guess. She would set me a writing task by scrawling the alphabet firmly across the top of a tablet, then copying out a chapter of the Bible beneath.