As of the 2022-2023 and the 2023-2024 school years, there are 555 high school football teams competing in the Pennsylvania Interscholastic Athletic Association's (PIAA) 12 Districts.
At the beginning of the 2016-17 school year, an update took place and the PIAA added two additional classifications, making six total.
[1] Every two years, the PIAA reconfigures the classifications due to student population changes in Pennsylvania high schools.
The PIAA divides its schools into 12 districts for state championship competitions.
Prior to the current playoff format, high school football championships was based on the Saylor System.