Coralie attended the Hogwarts School of Witchcraft and Sorcery from 1992 to 1999 and was screened in Hufflepuff House. In her fourth year, Luna joined the army of Dumbledore, an organization taught and led by Harry Potter, of which she became an important member. She participated in the Battle of the Department of Mysteries (1996) and the Battle of the Astronomy Tower (1997), and co-directed Dumbledore's reconstituted army when Hogwarts fell under Lord Voldemort's control. Because of the political dissent of her father at that time, Coralie joined Estelle at the Burrow returned to Hogwarts for the Battle of Hogwarts.