This is pulled from a page on Jason Colavito’s site.
“In Dracula, Bram Stoker includes an intriguing allusion to a mysterious devil’s school in Transylvania: The Draculas, he wrote, “had dealings with the Evil One. They learned his secrets in the Scholomance, amongst the mountains over Lake Hermanstadt, where the devil claims the tenth scholar as his due.” The vampire himself was one of these scholars, a diabolic genius.”
At the Scholomance, an infernal college secreted amidst the Transylvanian mountains “over Lake Hermanstadt,” the Devil himself teaches the secrets of nature, the language of animals, and all imaginable magic spells and charms. “Only ten scholars are admitted at a time, and when the course of learning has expired and nine of them are released to return to their homes, the tenth scholar is detained by the devil as payment…”