You not understanding that it’s severely encroaching the the relationship between teachers and parents is because you don’t have empathy.
Well that's certainly an accusation.
Are you sure about that, as you don't seem to empathise with the idea that most children do not cope well with losing their home, and that not losing their home is the ideal solution.
I understand your side and have a different way of wanting to deal with it that avoids the problems I see with government employees having side secrets with my 8 year old.
It's not about just having a "side secret". It's about rendering a safe space where children don't feel afraid of being who they are, when they don't have that option at home.
Bare in mind that this isn't even about direct disclosures. Every teacher would be obligated to report, so the child even acknowledging that fact anywhere in the school could be enough.
It makes it much easier for the teachers/school to offer resources to that child when that child isn't actively afraid of disclosing that information.
Even in the majority of situations where the parents aren't potentially abusive, it could even just allow the child to not be forcibly ousted until they're ready or more certain of their mindset.
You said kids might be homeless. I responded with a way to deal with it. Once again, that’s how conversations go.
Key word in that was might.
In your world you dealt with it by rendering them homeless then picking up the pieces afterwards. That's the worst outcome, at least in my mind.