I don’t know what that means...
With enough time and resources, you could duplicate anything the government school provides. If you don’t, it is a matter of ease, convenience, or afforability. None of those are necessarily bad things. A single parent family living on minumum wage will use government schools for basic education because it’s affordable. Parents who work 80 hours a week will use them because it’s convenient. Parents who don’t enjoy being with their kids can use it because it’s easy.
You have to pay? I just read an article here yesterday about hundreds of kids crossing the border into Brownsville, Texas daily to attend school. Not only do they not pay anything, local officials say there's nothing they can do about it.
My daughter teaches public high school and there's not a liberal bone in her body. If you have your kids in a public school and you are satisfied with the quality, good for you. There are some decent public schools and teachers, regardless of the stereotypes we hear about.