“...and many were not true residents: they boarded with unrelated Chinese families and claimed they were living with their uncle.”
That is an Asian thing... The Koreans also do that... My sons inlaws were very disterbed that my DIL dated non Korean men.. They love the kids, but it is still troublesome to them that they have “mixed” grandchildren
Of course they know who they are related to, but the Maryland school districts don’t know, don’t care.