He swiftly earns the respect of many of his colleagues and forms a close friendship with the curmudgeonly English master, Ian Howarth, and with several students of unique personality and talents.
Five years later, Beth and Joan are killed in a road accident; Grace is badly injured and requires many months of rehabilitation before returning home.
Whilst researching the book in London, he once again meets Julia Darbyshire, a teacher who had worked briefly at Bamfylde, and strikes up a romance with her.
In 1927 Herries retires; David and Carter apply for the headship, but the governors, unable to decide between them, appoint a South African named Alcock.
At the end of the book Julia informs David in a letter, shortly before her death from breast cancer, that he is the boy's real father.
To Serve Them All My Days mirrors the history of Britain in the post-Great War era, casting David's experiences against the difficulties, contradictions, and social issues of the inter-war years.
David's life focuses on how Britain comes to terms with the turmoil of the Great War, the General Strike, socialism and the formation of the National Government in particular.
Even the delinquent ones are thoroughly good eggs underneath while David Powlett-Jones is an absolute saint who can set any troubled child on the right path, including the bed-wetters and illicit pipe smokers!