Mitchell taught at a number of private (called public in England) schools until she retired in 1950. She returned to teaching in 1953 before retiring for good in 1961 at the age of 60, and no doubt this explains why she so often used schools in her books. She taught English, history and games. Her lifelong interest in athletics earned her membership in the British Olympic Association. Her first attempts at fiction in 1923 were rejected. She also wrote a number of books as by Malcolm Torrie and Stephen Hockaby. Born in Crowley, Oxfordshire, April 19, 1901, she never married (any knowledge of romance and sex in my books was purely academic, she explained).