I think that's definitely part of it. I think in the US there's another effect where parents view school as an extension of their social circle. This is especia

I think that's definitely part of it. I think in the US there's another effect where parents view school as an extension of their social circle. This is especially true of affluent suburban elementary school parents, some of which become their children's driver and social/athletic assistant. This behavior is viewed as helpful in solving the American "public school problem" but in effect prevents kids from becoming more independent. I don't think anyone is complaining about working parents in poor school districts being overly involved. It is in those districts where we need the most improvement.