At the state volleyball tournament in Cedar Rapids, Mount Vernon moves on and Williamsburg gets knocked off. Mount Vernon came out of the Demons’ regional. The Mustangs won in three yesterday over Red Oak. Williamsburg, who made the semifinals last season, lost in three to West Delaware. So in the semifinals tomorrow, Mount Vernon will face Bishop Heelan, and Waverly-Shell Rock will take on West Delaware. Today two Super Conference schools will be in action. In 2A, Mediapolis will take on Clarinda. In 1A, Holy Trinity will play LeMars Gehlen Catholic.