J.K. Rowling via Pottermore finally revealed the name of the U.S. Wizarding School, which
Fantastic Beasts and Where to Find Them characters Tina and Queenie Goldstein, and Percival Graves attended as youths. That can be seen here.
Ilvermorny, the name of the school, is located somewhere in the very north of the U.S., near the Canadian border, as shown on Pottermore's large interactive map during this weekend's A Celebration of Harry Potter at Universal Orlando Resort. Not much else about the school is known yet, but will revealed in due time.
The name of the school was revealed alongside three other top Wizarding Schools, which Rowling admitted were large and long-standing educational institutions approved by the International Confederation of Wizards. More on those other three, with very detailed descriptions from the Harry Potter author, will be up soon.