each house has a dueling club, each club has 4 challenges
Junior Duel
Senior Duel 1
Senior Dule 2
Champion
beat each champion you gain a badge and achievement, beat all 4 champions you get this achievement and badge
Griffindor- Great Hall, board to activate is on the right as you walk in the door
Hufflepuff- Training Grounds- board is on a pillar by the fence, next to the opening
Ravenclaw- Transfiguration Courtyard- if you come through the Grand Staircase shortcut, it is straight ahead on the side of the covered walkwayq
Slitherin- Paved Courtyard- board is on the side of the covered walkway, if you walk up from the boathouse its straight ahead