There are many subjects in Hogwarts that require magical knowledge, but not magical ability. Of course, subjects such as Charms and Defense Against the Dark Arts require the student to have magic, but what stops a squib from attending Hogwarts study subjects like Care of Magical Creatures or Ancient Runes ? A squib raised in a wizarding environment should be able to comprehend these subjects. It's not as if the Ministry is stopping them, as Hogwarts isn't on a tight leash. It's just something I have wondered about, because squibs could be a functioning subculture in the wizarding society, and all they do is get exiled to the muggle world. They could hold just as much value as every other wizard with the capability to cast a spell. Answer They would certainly not be admitted, and probably wouldn’t enjoy their experience if they did attend. Admittance to Hogwarts is controlled by the Quill of Acceptance and the Book of Admittance . You name gets written in the book if yo...