The Grey School of Wizardry is a school of occult magic that draws heavily on the fiction of J.K. Rowling. Founded by former headmaster Oberon Zell-Ravenheart, it operates primarily online and as a non-profit educational institution in California. The school offers lessons in over 500 classes across 16 departments. Graduates receive a certificate of journeymanship in their chosen major after completing an apprenticeship.