I totally agree with public education and not funding private schools with public money - I'm not a fan of segregation. I also don't think that's its necessary to ban private schools before implementing other helpful policies, like maternity leave or health care. My point is more that these things all combine to create good public education rather than pointing at just one part and suggesting it is the fix. I think ignoring the other components leads to disappointment when the single-solution proposals fail to deliver the expected results.
To be totally real, I also wanted to tell people what specific things they can ask their elected officials for in their own communities as a way of achieving more equitable outcomes globally. There's no reason not to copy Finland's homework. Except that Finland doesn't set homework.