Easy. Quit complaining to a computer screen and get out to your local public school. Volunteer, join the PTO, teach, or get on the school board. I'm at school every day so know what's being taught and which teachers I want or don't want my children to have. I'm also there as an influence for other's children. I devoted much time last year to Terri and to this day, I have public school educated children asking me about Terri and telling me their concerns. You want change, then by golly do something about it!
Really, though. I think other homeschooling parents would not find your suggestion a practical application, 'lest they slack off on teaching their own children.