Waukee volleyball coach Ed Frederick resigned this week.
Frederick held an 87-58 record over four seasons with the Warriors. He led Waukee to back-to-back state tournament appearances in 2010-11. Waukee had reached state just once before in school history, in 1999.
The Warriors compiled a 19-20 record this season.
The school will begin a search immediately, activities director Jim Duea said.