The new classifications were revealed Friday by the Kansas State High School Activities Association.
The split 4A came about with a vote of the 4A schools in June. The top 32 schools in enrollment will be in Division I with the bottom 32 in Division II in five sports: football (beginning in 2014), basketball, volleyball, baseball and softball.
All other sports will compete as one class (64 schools). All seven schools in the Frontier League were in Division I.
Central Heights, Wellsville and West Franklin remained in 3A.
A notable move was Scott City, the three-time 3A state basketball champion, moved to 4A. Other changes in 4A include Andover-Central (5A), Burlington (3A), Russell (3A) and Miege (5A).
Wichita Collegiate, Rock Creek and Hesston moved down to 3A from 4A.