Suggested By Hermit
Hogwarts is aware of the Thing’s presence so the Ministry feels that additional security must be placed on the school, and stationed a group of Dementors around the castle. Nobody goes in or out once the term starts.
To win, Hogwarts must expel the Thing from the school, it is not necessary to kill it. The Thing must take over 85 percent of Hogwart’s student population, 600 students for the purposes of this match, as well as ten members of the faculty.
The Room of Requirement cannot be used for this match.
Will Hogwarts survive?