New Hampshire Interscholastic Athletic Association

The New Hampshire Interscholastic Athletic Association is the governing body for sports competitions among all public and some private high schools in the U.S. state of New Hampshire. It is a member of the National [Federation of State High School Associations].

Classifications

Schools competing under the NHIAA are grouped into four divisions:

Division I: over 900 students
Division II: 550-899 students
Division III: 286-524 students
Division IV: up to 285 students

Schools are reclassified every two years. The classification thresholds are periodically adjusted so as to result in an approximately equal number of teams in each class. Schools may petition the NHIAA to play in a class higher than that in which they would otherwise be placed.
For some sports, competition is not organized based on school class, but based on divisions established by the NHIAA committee governing the individual sport.
Classifications for the 2022–23 and 2023–24 seasons are as follows:

Division I (formerly Class L)

Division II (formerly Class I)

Division III (formerly Class M)

Division IV (formerly Class S)

Sports

The NHIAA sanctions competitions in the following sports: