Is a master's degree in history useful outside teaching?
Short answerYes; it strengthens research and referencing skills, creates useful connections and can prepare an independent historian to write without requiring a full doctorate.
NotesPostgraduate history has uses beyond school teaching. A master's develops research practice, source handling and referencing beyond the undergraduate level. For someone returning to study later in life, it offers a one- or two-year commitment with a defined cost and a community of specialists. That can be sufficient preparation for an independent book project when a doctorate would demand more time than the researcher needs or can justify.