Probably a reference to the "residential school" system in Canada, which largely served as a way to extract indigenous kids from their nations and raise them instead in the culture of the people running the government, with parents fairly intentionally unable to visit their children. (Also they were in the news in recent months for the recent discoveries of mass graves.) https://en.wikipedia.org/wiki/Canadian_Indian_residential_sc...
(It does seem, as another commenter pointed out, that this isn't necessarily the only end result of state involvement in child-raising. In particular, it seems to me you can draw a qualitative difference between greater state education as a way to expand the experiences of children growing up and as a way to constrain those experiences.)
The British and later Canadian (of British descent mostly) Administration had native children raised by the state. The end results are, well, let's just say it makes what's happening to the Uighur look not so bad in comparison. [0]
BTW these "schools" were still around when their current leader's father (Trudeau) was in office.
