Hogwarts estava tão dissimulada:
Não obstante, as delegações das escolas estrangeiras não tiveram dificuldade em encontrá-lo. Alguém presume que Dumbledore poderia disponibilizar o local para os estudantes de Beaxbatons e Durmstrang, se necessário. Ele certamente parece ser capaz de remover os feitiços de proteção ao redor de Hogwarts:“But Hogwarts is hidden,” said Hermione, in surprise. “Everyone knows that . . . well, everyone who’s read Hogwarts, A History, anyway.”
“Just you, then,” said Ron. “So go on — how d’you hide a place like Hogwarts?”
“It’s bewitched,” said Hermione. “If a Muggle looks at it, all they see is a moldering old ruin with a sign over the entrance saying danger, do not enter, unsafe.”
“So Durmstrang’ll just look like a ruin to an outsider too?”
“Maybe,” said Hermione, shrugging, “or it might have Muggle-repelling charms on it, like the World Cup stadium. And to keep foreign wizards from finding it, they’ll have made it Unplottable —”
—Harry Potter and the Goblet of Fire
As they flew over the dark, twisting lane down which they had walked earlier, Harry heard, over the whistling of the night air in his ears, Dumbledore muttering in some strange language again. He thought he understood why as he felt his broom shudder when they flew over the boundary wall into the grounds: Dumbledore was undoing the enchantments he himself had set around the castle so they could enter at speed.
—Harry Potter and the Half-Blood Prince
Uma situação similar provavelmente ocorre com Durmstrang e Beauxbatons: eles podem simplesmente alterar ou remover suas magias para permitir em estudantes estrangeiros. Em particular, dado que as delegações chegam somente em um único dia, elas precisam apenas levantar seus encantamentos de proteção por um período muito curto.