Pershall grew up on a farm in Iowa, USA, and came to Australia as a new teacher graduate in 1974. From 1974 to 1988 she edited and wrote articles for several magazines published by the Victorian Education Department. From 1994 to 1999 she worked as a relieving assistant principal in Melbourne state schools, and at the end of 2000 she resigned from the Victorian Education Department and became a full-time writer. Her earlier books included
Shopkeepers (1980), a career guide for children, and
Oz Rock (1987), a children's reader about rock music. She has also written books with both her daughters,
Katherine and
Anna (qq.v.)