Idaho High School Activities Association


The Idaho High School Activities Association oversees high school athletics and activities in the state of Idaho. Idaho high schools are classified in five categories, based on enrollment, for league competition and state playoffs and championships.
Schools primarily compete within their own classification for regular season play, but are allowed to play other schools one classification above or below them in most sports.

Classification

IHSAA classifications are based on four-year enrollments.
The classifications for the state's 161 high schools for 2018–20 are:

Historic classifications

Source:
DistrictGeographical area
INorth
IINorth Central
IIISouthwest
IVSouth Central
VSoutheast
VIEast

The six districts correspond to those used by the state's transportation department.

5A Conferences

High Country Conference -
Inland Empire League -
Southern Idaho Conference -
High Country Conference -
Great Basin Conference -
Inland Empire League -
Southern Idaho Conference -
Intermountain League -
Mountain Rivers Conference -
Sawtooth Central Conference -
Snake River Valley Conference -
Southeastern Idaho Conference -
Canyon Conference -
Central Idaho League -
Nuclear Conference -
Southeastern Idaho Conference -
Western Idaho Conference -

Division I

Snake River Conference -
White Pine League -
Western Idaho Conference -
Long Pin Conference -
North Side Conference -
White Pine League -
North Star Conference -
Rocky Mountain Conference -