According to Lou Bezjak's article in The State
The realignment committee decided the biggest changes will be in Class A, the smallest classification, and 5A, the biggest classification.
Currently, there are 38 Class A schools but only 29 of them have football. In the next realignment, there will be a base of 50 schools with the flexibility to move plus-or-minus four schools giving it between 46-54 schools.
Having more Class A schools would probably eliminate some of the issues that happened in the football playoffs in which a winless team Hemingway hosted a playoff game or one-win teams made the playoffs.
In Class 5A there are 48 schools, but in the next realignment there will be a base of 36 with a plus-or-minus of four schools, meaning there could be as few as 32 schools or as many as 40 in 5A.
Once Class A and 5A are established, the remaining schools will be divided equally among Class 2A, 3A and 4A with the flexibility to move plus-or-minus four schools as it pertains to that classification.