Complex sentence: She was principal of Cheltenham Ladies' College from 1907 until 1922, and in 1920, she became Justice of the Peace for Cheltenham, becoming one of the first women magistrates in England.
Split into simpler sentences: She was principal of Cheltenham Ladies' College from 1907 until 1922. In 1920, she became Justice of the Peace for Cheltenham, becoming one of the first women magistrates in England.