Pinkerton Academy is a secondary school in Derry, New Hampshire, United States. It serves roughly 3,100 students, making it by far the largest high school in New Hampshire, more than 800 students greater than the next largest high school. Pinkerton's situation is unusual, as it is a private school which also serves as the "public" high school (grades 9–12) for the communities of Derry, Hampstead, Chester, Auburn, Candia, and Hooksett.