"I enjoyed the meetings too. It was like having friends.
-Luna when she found out the D.A. was cancled
In her fourth year, Luna became a part of Dumbledore's Army, a group ran by Harry Potter, to teach real Defense Against the Dark Arts. She very much enjoyed the meetings and mastered many spells. In her fifth year, when Harry told her the meetings weren't going to be happening any more, she seemed very sad. She even hepled run the D.A. when Harry left, with Neville Longbottom and Ginny Weasley.