It is not without reason that underage wizards are not easy to be trusted. Most students are indeed unreliable. This has something to do with their long-term living in an ivory tower like Hogwarts. When Albert returned to the shelter, the hall was full of busy people, and it looked particularly lively. In the crowd, Kingsley was directing everyone to clean up and arrange the scene of the Christmas ball, and the efficiency was higher than Albert expected.