The thing about how America used it/thought about it and the Hitlerian concept, is that neither America nor England ( where it was also a big deal ) didn't carry it out to any extent. It was just talked about a lot; though those with mental incapacities were often sterilized here.
This article is from a British paper about Brit schools, so extrapolating it to America isn't really workable;especially since most schools, both public and private, with the exception of Catholic schools, no longer require the wearing of uniforms.
They’re standardizing the globe. I’ve observed that what happens in England comes here. The treaties have been signed...some for decades, e.g., Nixon signed a treaty that overpopulation is a security threat hence the effort to reduce the birthrate here and globally. It’s also a way for the UN et al to get into poorer countries with their NGO’s and once they’re in the door - Soros, Singer, Jeffrey Sachs aren’t far behind. All funded by the west.