If we could just raise the standards then poof problems solved. You can raise the standards all you want but as long as parents think its the states job to educate their children nothing will change. Parents are responsible for their childrens education. I raised my sons in one of the worst school systems in the state and they all have excellent educations. I would not allow them anything less but it required work on me and my wifes part. Learning and knowledge are not commodities than can be bought and sold they have to be worked for. We get our work ethic from our parents and most parents are more than willing to allow the school to try and do that and the school can not and will not do it.
Schools give our children the tools to learn but we as parents have to teach our children how to use those tools and instill in them their importance.
Before anyone starts telling me about how some parents are not as smart or educated as others let me tell you this. My Dad can not read. Never learned how. He gave me a love and respect for learning. He never taught me anything in a book but he taught me that my education was important. He taught me that I would teach myself as I went. He taught me it was up to me to become educated.
Good for you, and I respect all of that, but my statement still stands.
If the government insists on compulsory education then you should be able to expect that the education provided is of the best quality.
That doesn't mean that parents still don't have responsibilities to instill morality, life skills etc.
But you should expect that basic education, provided by the government at their insistence (except for the opportunity for home schooling of course) should be of excellent quality.