In a house in a residential area closeby to a well-funded public school and local facilities. Thats where most human beings live.
You don't think they'd shoot through, or get smuggled out by relatives or family friends or sympathisers?
And is it really our responsibility to provide schooling and housing for kids who are here illegally?
Seems to me we're hard pressed to adequately provide these facilities and services for our own citizens. I can't see that we're under any obligation to provide them to illegal immigrants, even if they're kids.