New Hampshire Interscholastic Athletic Association
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The New Hampshire Interscholastic Athletic Association (NHIAA) 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.
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 | |
| Abbreviation | NHIAA |
|---|---|
| Formation | 1947 |
| Type | Volunteer; NPO |
| Legal status | Association |
| Purpose | Athletic/Educational |
| Headquarters | 251 Clinton St. Concord, NH 03301 |
Region served | New Hampshire |
Executive Director | Jeffrey Collins |
| Affiliations | National Federation of State High School Associations |
| Website | nhiaa |
Classifications
Schools competing under the NHIAA are grouped into four divisions (classification thresholds as of July 1, 2025):
- Division I: over 900 students
- Division II: 501-899 students
- Division III: 281-500 students
- Division IV: up to 280 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 most multi-division sports (e.g. football or ice hockey), competition is organized into divisions based on enrollment thresholds established by the NHIAA committee governing the individual sport (which can very based on the number of participating schools in a sport).
Classifications for the 2024–2025 and 2025–2026 seasons are as follows:[1]
Division I (formerly Class L): 20 schools
Division II (formerly Class I): 20 schools
- Bishop Guertin (Nashua)
- Bow
- Coe-Brown Northwood Academy
- Contoocook Valley (Peterborough)
- Hanover
- Hollis Brookline
- John Stark (Henniker)
- Kennett (North Conway)
- Kingswood (Wolfeboro)
- Laconia
- Lebanon
- Manchester West
- Merrimack Valley (Penacook)
- Milford
- Oyster River (Durham)
- Pelham
- Pembroke
- Plymouth
- Sanborn (Kingston)
- Souhegan (Amherst)
Division III (formerly Class M): 23 schools
- Belmont
- Berlin
- Campbell (Litchfield)
- Conant (Jaffrey)
- Derryfield (Manchester)
- Fall Mountain (Langdon)
- Gilford
- Hillsboro-Deering
- Hopkinton
- Inter-Lakes (Meredith)
- Kearsarge (North Sutton)
- Mascoma Valley (Canaan)
- Monadnock (Swanzey)
- Newfound (Bristol)
- Newport
- Prospect Mountain (Alton)
- Raymond
- Somersworth
- St. Thomas Aquinas (Dover)
- Stevens (Claremont)
- Trinity (Manchester)
- White Mountains (Whitefield)
- Winnisquam (Tilton)
Division IV (formerly Class S): 26 schools
- Bishop Brady (Concord)
- Canaan (Vermont)
- Colebrook
- Concord Christian
- Epping
- Farmington
- Franklin
- Gorham
- Groveton
- Hinsdale
- Holy Family (Manchester)
- Lin-Wood (Lincoln)
- Lisbon
- Littleton
- Mascenic (New Ipswich)
- Moultonborough
- Mount Royal Academy (Sunapee)
- Newmarket
- Nute (Milton)
- Pittsburg
- Pittsfield
- Portsmouth Christian
- Profile (Bethlehem)
- Sunapee
- Wilton-Lyndeborough
- Woodsville
Sports
The NHIAA sanctions competitions in the following sports:
Fall season
| Sport | Divisions |
|---|---|
| Bass Fishing (Co-ed) | One division |
| Cross Country | Three divisions (I, II, III) |
| Esports | One division |
| Field Hockey | Three divisions (I, II, III) |
| Football | Four divisions (I, II, III, IV) |
| Golf (Co-Ed) | Four divisions (I, II, III, IV) |
| Soccer | Four divisions (I, II, III, IV) |
| Spirit | Three divisions (I, II, III) |
| Volleyball (Girls) | Three divisions (I, II, III) |
Winter season
| Sport | Divisions |
|---|---|
| Basketball[2] | Four divisions (I, II, III, IV) |
| Bowling (Co-ed)[3] | One division |
| Gymnastics[4] | One division |
| Ice hockey (Boys)[5] | Three division (I, II, III) |
| Ice hockey (Girls)[5] | One division |
| Indoor Track[6] | Two divisions (I, II) |
| Skiing (Alpine[7] and Nordic[8]) | Four divisions (I, II, III, IV) |
| Spirit[9] | Three divisions (I, II, III) |
| Swimming and Diving[10] | Two divisions (I, II) |
| Wrestling[11] | Three divisions (I, II, III) |
Spring season
| Sport | Divisions |
|---|---|
| Baseball[12] | Four divisions (I, II, III, IV) |
| Lacrosse (Boys)[13] and Girls[14] | Three divisions (I, II, III) |
| Softball[15] | Four divisions (I, II, III, IV) |
| Tennis (Boys) and (Girls)[16] | Three divisions (I, II, III) |
| Track and field[17] | Three divisions (I, II, III) |
| Volleyball (Boys)[18] | One division |