"Those who attend are exempt from curfew that evening, and he hopes to have the four Houses compete in throwing the best social. He's also scheduled a Quidditch scrimmage against Beauxbatons and Durmstrang later this year, which means all four of our Houses will come together to make an all-star team. Imagine, for one game of Quidditch, we can have a Slytherin beater protecting a Hufflepuff seeker as Gryffindor and Ravenclaw chasers work together to score against a different school."