Hogwarts School of Witchcraft and Wizardry is Harry's school and is considered the best or one of the best magical schools in the world.
Hogwarts is founded around the 12th century.
Each Hogwarts students is sorted into one of four houses: Gryffindor, Hufflepuff, Ravenclaw, or Slytherin.
In the canon
In the canon, Hogwarts is founded around 990 A.D.