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1.
abbr.; Western Pennsylvania Interscholastic Athletic League. The organization through which high schools in Western Pennsylvania compete for dominance, with schools being divided into A ("single A"), AA ("double A"), AAA ("triple A"), or AAAA ("quad A") categories based on size.

The WPIAL champion usually contends with the EPIAL champion in the state championship contest.
Gonna see CCHS destroy the WPIAL at Heinz Field #rollvikes #roadtohershey
by Col. Hans Landa September 30, 2011