Hallows International School of Witchcraft and Wizardry

What would an international AU school of Witchcraft and Wizardry look like? This is an in depth look at just such a place, founded by Merlin himself and his first eight pupils, famous witches and wizards in their own rights, and each with their own house. Located on a isolated island that is its own nation governed by the school and filled to the with magical creatures and places.