J.K. Rowling has revealed new information about several other schools in her Wizarding World universe, beyond Harry Potter’s famed school of Hogwarts. It turns out are only eleven “long-established and prestigious wizarding schools worldwide,” all of which are properly regulated by the International Confederation of Wizards.
Given the sparsity of wizarding schools, “smaller and less well-regulated institutions” are bound to pop-up, though Rowling notes that she “cannot vouch for the standard of education they might offer.”
In a series on Pottermore, Rowling discussed six of those eleven. Mahoutokoro is the smallest of the prestigious schools, and is set on the volcanic island of Minami Iwo Jima in Japan. Japanese wizards start school at age seven, but don’t start boarding at school until age eleven. Students there wear enchanted robes that grow as they do, and “gradually change color as the learning of the wearer increases.”