Idaho High School Activities Association

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Idaho High School
Activities Association
Map of USA highlighting Idaho.png
Formation1925; 96 years ago (1925)
Legal statusAssociation
PurposeAthletic / Educational
Headquarters8011 Ustick Road
Boise, Idaho 83704
43°38′01″N 116°16′57″W / 43.6337°N 116.2826°W / 43.6337; -116.2826Coordinates: 43°38′01″N 116°16′57″W / 43.6337°N 116.2826°W / 43.6337; -116.2826
Region served
161 high schools
Official language
Executive Director
Ty Jones
Assistant Director
Julie Hammons
AffiliationsNational Federation of State High School Associations

The Idaho High School Activities Association (IHSAA) 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.[1]


IHSAA classifications are based on four-year enrollments (grades 9–12).[2]
The classifications for the state's 161 high schools for 2018–20 are:[3]

Classification Enrollment
(gr. 9–12)
Average per
class year
5A 1280 + 320 + 18
4A 640–1279 160–319 29
3A 320–639  80–159 20
2A 160–319 40–79 26
1A, Div. I  100–159 25–39 28
1A, Div. II   0–99  0–25 40
Total 161

Historic classifications[edit]

Years 5A 4A  3A  2A 1A (I) 1A (II)
2008– 5A 4A 3A 2A 1A (I) 1A (II)
2001–2008 5A 4A 3A 2A 1A (FB: I, II)
2000–2001 A-1 (I) A-1 (II) A-2 A-3 A-4
1984–2000 A-1 (FB: I, II) A-2 A-3 A-4
1963–1984 A-1   A-2     A-3   A-4
1957–1963 AAA AA A
1937–1957 A B
1917–1937 single classification


  • A-1 was split into two divisions for football in fall 1984, all sports in fall 2000 [5]
  • 1A was two divisions for football only; two divisions for volleyball and basketball in fall 2008.


District map
District Geographical area
I North
II North Central
III Southwest
IV South Central
V Southeast
VI East

The six districts correspond to those used by the state's transportation department.[6]

5A Conferences[edit]

4A Conferences[edit]

3A Conferences[edit]

2A Conferences[edit]

1A Conferences[edit]

Division I[edit]

Division II[edit]

Neighboring states[edit]

See also[edit]


  1. ^ "IHSAA". IHSAA. Retrieved February 1, 2009.
  2. ^ "Class figures, 2012–14" (PDF). IHSAA. Archived from the original (PDF) on July 29, 2012. Retrieved October 5, 2012.
  3. ^ "2018-2020 General classification and alignment" (PDF). IHSAA. September 21, 2018. Retrieved February 28, 2019.
  4. ^ "Four former titlists playing in A-1 tournament at Boise". Lewiston Morning Tribune. (Idaho). Associated Press. March 11, 1964. p. 10.
  5. ^ "State's A-1 schools to split". Spokesman-Review. September 23, 1999. p. C6.
  6. ^ "Board of Directors". Idaho Department of Transportation. Retrieved November 22, 2012.

External links[edit]