For the “how is this racist?” people:
In many cultures, wearing shoes inside the home is taboo. Most of those cultures belong to people of color.
That a white person in a position of authority in a school district has been able to live their whole life without ever having to learn about people of color’s cultural practices inside their own homes is an example of white privilege. Everyone else in the US has to learn both their own native cultural practices *and* the cultural practices of mainstream white Americans.
The whole mentality of white American culture as the default “normal” culture and everyone else being seen as either an aberration or not even worth thinking about at all is a form of white supremacism. The individual who made the policy and the ones who saw it in draft form and did not object may not be deliberately and consciously white supremacists, but the fact that they’ve been too lazy their entire lives to bother learning about the cultural practices of people whose skin color is darker than theirs certainly indicates some unconscious racism.
Meanwhile, the fact that there are so many administrators in this school district who never bothered to learn about the cultural practices of people of color in their homes is an example of systemic racism. Not only did no one catch their error before it was published, but it apparently never even occurred to them to have someone with some multicultural expertise check over the policies to make sure there were no problems with the rules they were imposing on their students in their own homes. The people writing and approving the policy literally couldn’t imagine that everyone else isn’t just like them, whereas everyone in the US who isn’t white has to learn that people are different from a very young age.
Not all racism is Klan hoods and lynchings. Sometimes it’s just the racially insensitive rudeness of not reciprocating the effort that people of color must invest in learning about mainstream white American culture.
That you don’t immediately understand how this policy is racist indicates that you harbor some unconscious white supremacism yourself. You should work on that.