[1] KSHSAA divides schools based upon enrollment of grades 9, 10, 11 and 12 for competition and state and regional championships.

[1] In 2013, the 64 schools in class 4A voted to split into two divisions for volleyball, baseball, basketball, softball, and football.

The two-division format which currently exists in 1A for basketball, scholars bowl and volleyball, and in 4A for baseball, basketball, softball and volleyball, were eliminated; however, the two-division structure in 1A was reinstated by a vote of 1A members for the 2020-21 school year.

Football is evaluated biannually based only upon enrollment for grades 9, 10, and 11, with classifications for the next two seasons announced in October of an odd-numbered year.

Schools with 100 or fewer students in grades 9-11 have the option to play Eight-man football instead of the traditional 11-man game.

In eight-man football, there are two divisions of roughly equal size, with 105 schools scheduled to compete in 8-man for the 2010 and 2011 seasons, decreasing to 104 for 2012 and 2013 due to consolidation in many rural towns.

Additionally, the KSHSAA began to sponsor 6-man football in 2022 for schools with 55 students or fewer in grades 9-11 at the time of reclassification.

[1] In some sports and activities where not all small schools may field a team, classifications are combined for purposes of state championships.

[1] Basketball: Football: The association's largest event is the Kansas State track and field championships, which are held the weekend before Memorial Day at Cessna Stadium on the campus of Wichita State University.

The state basketball championships are held the second week of March, with girls and boys competition taking place at the same time.

State championships for baseball and softball are held at the same time as the track championship, usually at community colleges or large recreational fields, although some championships have been held at Lawrence–Dumont Stadium in Wichita, home of the National Baseball Congress tournament and the American Association of Independent Professional Baseball's Wichita Wingnuts, as well as Hoglund Ballpark at KU in Lawrence.

[10] In 2006, 4A left 5A and 6A and held its own tournament at the Bicentennial Center in Salina, Kansas, while the other classes stayed at their respective sites.

The 2011 6A and 5A state championships were moved to the Hartman Arena in Park City, Kansas, and have continued there since.

Due to Kansas's cold climate in the winter, the championships for golf, tennis, and soccer are split.

Similar sized states, including neighboring Missouri do not have as many classifications, but have more total schools.

It has been suggested by many Kansas High School supporters (most specifically in basketball) that 5A and 6A should combine to form one 64 team classification.

There are currently 40 leagues that are accepted by the Kansas State High School Activities Association.