I went to Hogwarts after being spotted by Grindelwald

Principal: Gellert Grindelwald (President of the Wizarding Reform Association, first-class magician of the Merlin Order) to Mr. Sean Wallop. Congratulations, you have been approved to study at Nurmengard School of Witchcraft and Wizardry. Enclosed is the letterA list of books and equipment is required. The semester is scheduled to start on September 1st, please send back your reply before July 31st. Vice Principal (female) Vita Rozier would like to take a look at the second letter I received from the school of magicThe admission notice, Sean fell into deep thought... There is a big problem in this magical world...