Theory of Charms is part of the Ordinary Wizarding Levels examination taken in June by students of Hogwarts School of Witchcraft and Wizardry. In 1996, the exam was scheduled for Monday morning, right after breakfast. The book Achievements in Charming could be used to study for it.
- Hermione Granger noted that Cheering Charms were covered, although she did not feel that she did justice to them, and thought that she should have included the counter-charm for hiccoughs.
- A question twenty-three existed, on which Hermione also felt she did not do well.
- Harry Potter and the Order of the Phoenix (First appearance)