The following is the NHIAA's six-division alignment, which will be used for the first time this season. Schools were placed in a division based on enrollment, and each school's enrollment at the time of classification is listed in parenthesis.

Note: A * indicates that a school petitioned up to a division that has schools with larger enrollments and will play in a division other than where it was originally placed. Schools are not permitted to petition down.

Division I (1,800+)
Nine schools

Pinkerton Academy (3,331), Nashua South (2,287), Salem (2,263), Manchester Memorial (2,165), Manchester Central (2,159), Nashua North (2,054), Concord (1,877), Londonderry (1,827) and Manchester West (1,809).

Division II (1,290-1,799)
Nine schools

Spaulding (1,768), Keene (1,762), Dover (1,671), Exeter (1,654), Merrimack (1,593), Timberlane (1,590), Alvirne (1,518), Winnacunnet (1,324) and Bishop Guertin* (885).

Division III (1,289-950)
Nine schools

Goffstown (1,289), Bedford (1,172), Con-Val (1,087), Portsmouth (1,067), Pembroke Academy (1,045), Souhegan (970), Hollis-Brookline (952), John Stark* (890) and Milford* (872).

Division IV (949-740)
Nine schools

Kingswood (947), Kennett (945), Merrimack Valley (884), Laconia (822), Plymouth (817), Monadnock (787), Lebanon (761), Hanover (746) and Sanborn (743).

Division V (739-660)
Nine schools

Epping-Newmarket (736), St. Thomas (721), Pelham (700), Bow (669), Stevens (667), Kearsarge (665), Somersworth* (605), Trinity* (470) and Bishop Brady* (443).

Division VI (659-1)
Ten schools

Fall Mountain (656), Campbell (575), Gilford (572), Winnisquam (567), Farmington (487), Franklin (477), Mascoma (471), Newfound (465), Newport (461) and Inter-Lakes (441).