That same evening, the news that Cedric was helping Harry organize a DA meeting spread quickly among the students at Hogwarts. The school, with winter fast approaching, grew lively in response. A growing number of students became interested in the so-called DA meetings, and many lower-year students were asking around about how to join the Defense Association.
Of course, Slytherin students were excluded from the DA meetings. The reason was simple: to prevent anyone from sneaking in to gather secret information.
A small minority of Slytherin students were very unhappy about this, bringing up Albert's "Defense Association" to argue that Harry was practicing double standards.
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