In my world it is my responsibility to make sure my children are given every advantage available to them. So far, being in school has been more of a benefit because my kids' teachers have more knowledge, expertise, resources and experience that I do across the board. That said, the biggest disadvantage the teachers have to deal with is accountability in testing and having 30 kids with a broad range of ability levels. When this is compared to me I have no accountability (on earth that is) and only 2 children who are pretty similar. My perfect recipe includes a little of school and a little of me. My kids do the basics in school while I undertake subjects the schools can't or won't. My 6th & 7th graders have been exposed to Chemistry, Physics, Anatomy, Economics, Political Science, Geography, Sociology, Technical Writing, World History, the Theater, Museums, Art History and countless other topics the school can't possibly afford to customize to my families specifications because of my willingness to do it.
These days my biggest issue is that the kids simply do not know how to study properly but I'm not calling the school to ask them to do it, I'm teaching my kids myself on my time.
I let the school do what it does best because it frees me up to tackle the embellishments that fine tune a mind, at least that's my approach. To each their own.