Anna Lacey, a recent graduate from the countryside, faces the overwhelming reality of her first teaching position in a crowded, chaotic London suburb. Anna must navigate the physical constraints of an overcrowded school building while managing a diverse classroom of unruly students. She contends with professional pressures from ambitious colleagues and demanding inspectors, all while balancing the personal strain of living under the roof of a difficult landlady. The narrative follows her development through the academic year, documenting her adaptation to urban life and the complexities of the educational system.

Readers frequently highlight the gentle wit and observational humor that define the author's writing style. Discussion often centers on the authentic portrayal of the frustrations and small victories inherent in the teaching profession. Critics note that the narrative effectively balances the protagonist's personal growth with the external pressures of her challenging work environment. The book is often praised for its ability to find charm and humanity within the mundane struggles of daily life. Many readers appreciate the atmospheric depiction of the post-war suburban setting and the nuanced characterizations of the supporting cast.