Well, it is for the good of children as the worst thing a child can get is "implicit racism" that can't be cleansed.
As teacher's union repeatedly said, reopening schools even in this December is "a recipe for propagating structural racism". See? what's bigger than racism? Nothing is bigger than racisms, be it truths, problems, issues, or challenges in the US.
So, if you dare to mention reopening the school again, you're a racist. If you dare to discuss education reform, you're a damn racist. If you dare to challenge teachers union, you're a racist. Case closed.