Albus posts a list on the Slyhterin Notice Board and gives a knut to a firstie of Ravenclaw, Gryffindor, and Hufflepuff & same list to post on their notice boards. The paper has a charm that makes it illegible to anyone over the age of 19.
1. Party in the Slytherin dorms tonight just for the hell of it
2. Bring the essentials...
-girls I mean, what?
3. Anyone who wants to place a bet on the upcoming Gryffindor V. Ravenclaw match, put your name, amount betting, and your prediction on a piece of paper and leave it in Larz the Loud statue's mouth. (It's located in the 6th floor corridor)
4. Lastly, anyone going to the Broken Wand concert on Monday bring your ticket to the party tonight to find out where we're meeting if you want to leave with the group.