Homeroom Diaries is a realistic fiction novel by James Patterson aimed at teenagers.

Published in the United States by Little, Brown and Company on July 22, 2014, the book follows high-schooler Margaret Clarke, who goes by the nickname Cuckoo.

When the book begins, Cuckoo is living with a foster mother after her own mother abandoned her, an incident that caused Cuckoo to have a brief stay at a mental institution.

"[4] Homeroom Diaries has received positive reviews from critics.

Publishers Weekly said, "Patterson brings the misfit theme of Middle School: The Worst Years of My Life and its sequels into edgier territory"[3] and book blogger Miss Literati said, "Patterson has managed to write a novel that tells a honest, fun, highly entertaining read.