Susan Cooper was born in Burnham, Buckinghamshire on 23rd May 1935. Though living near London, Cooper was not evacuated during the war and therefore witnessed the full force of the Blitz as it struck the capital – she later wrote of her experiences during the war in her novel Dawn of Fear (1970).
Cooper attended Slough High School, a local grammar school where she pursued her love of literature. In interviews she has said that she cannot remember a time when she did not write – always creating stories, articles and plays for herself, brother and friends.
Susan Cooper studied English at Oxford University, where she became the first female editor of the university newspaper, Cherwell. After graduating she worked for the Sunday Times as a journalist and features writer – her immediate boss at the time being James Bond creator Ian Fleming. In her spare time she wrote fiction and the first Susan Cooper book was published in 1964 titled Mandrake. Although Mandrake was a fantasy novel for adults , a year later she published a book for children, Over Sea, Under Stone (1965) - the first in her acclaimed The Dark is Rising sequence.
Soon after the publication of Over Sea, Under Stone Cooper moved to the USA to marry Nicholas Grant, a widowed MIT lecturer. At the age of 27 Cooper suddenly had three teenage step-children. While continuing to write columns for British newspapers she worked on her own books, publishing more novels for children and a biography of playwright J. B. Priestley. She also had two children of her own, Jonathan and Kate.
In the early 1970s she began writing a sequence of novels for children called The Dark is Rising, sequels to Over Sea, Under Stone. Again the books combined traditional Celtic and British imagery with adventure. In 1973 The Dark is Rising was published to great acclaim on both sides of the Atlantic. It was followed by Greenwitch (1974), The Grey King (1975) and Silver on the Tree (1977). Widely praised and read, the series has gone on to become the most famous of all Susan Cooper books. The Grey King was awarded the Newbery Medal, one of America's most prestigious awards for children's literature. Cooper also wrote for the stage and television, co-authoring the play Foxfire, set in the Appalachian Mountains, with actor Hume Cronyn. The play starred Cronyn and his wife Jessica Tandy and was a success on Broadway. Cooper received Emmy nominations for her TV adaptation of Foxfire and for The Dollmaker, which starred Jane Fonda.
Throughout the following decades Cooper published picture books for children, including The Silver Cow (1983) and The Selkie Girl (1986) and novels including The Boggart (1993), King of Shadows (1998) and Victory (2006).
Cooper now lives in Massachusetts, near her children and grandchildren. Her most recent novel was Ghost Hawk (2013), a study of the conflict between Native Americans and the earliest English settlers. She is the recipient of two Tir na nÓg Awards, the Janusz Korczak International Literary Prize and the Margaret A. Edwards Award, a lifetime award for a ‘significant and lasting contribution to young adult literature’.