Ilvermorny is the premier school of magic in North America, located on Mount Greylock in Massachusetts. Founded in the 17th century by Isolt Sayre, a descendant of the famous Salem witch Bridget Bishop, it serves young witches and wizards from across the continent. The school has four houses: Thunderbird, Wampus, Pukwudgie, and Horned Serpent, each representing different magical traits. Students are sorted into these houses based on their personalities and abilities, similar to the sorting process at Hogwarts School of Witchcraft and Wizardry in the UK.