According to the novels , admission to Hogwarts is selective , in that children who show magical ability will automatically gain a place .
Squibs can not attend the school as students ( though they can work there in other roles , as Argus Filch does ) .
According to the novels , admission to Hogwarts is selective , in that children who show magical ability will automatically gain a place , and squibs can not attend the school as students ( though they can work there in other roles , as Argus Filch does ) .