The teachers of each house ushered their students back to their quarters. They were quite clear with the instructions - stay put and don't do anything stupid.
Of course, Hogwart's pupils weren't great with following instructions. Many of them were bound to sneak out of their quarters at night and seek to uncover the truth. They couldn't even be sure that the friends around them were who they said they were - this Polyjuice potion was a tricky one.
The Death Eaters were still organising themselves. Having disguised themselves as Hogwarts students, they were biding their time and, so as to not risk exposure, had decided to not meet up at first.
With the cover of night, they would be unlikely to sit by silently, though.
Remember to send in your Night Actions!
Role PMs will be coming out over the next hour. The night will finish 25 hours from this post. Please PM me questions rather than asking in the thread - if needed I can elaborate slightly on your spells.