https://www.naturalchild.org/articles/guest/marlene_bumgarner.html
I like a lot of John Holt's ideas. Unschooling isn't our thing around here, though I see a lot of value in his views, there are many ways to become educated, and the most important value I've come to regard is dedication to your child's interests and learning journey.
https://www.cantrip.org/gatto.html
"The six lesson school teacher", a great article, covering what school actually teaches your child.