Put your money where your mouth is and go teach a class in a public school. Are you too good to become part of the change you feel is necessary?
I don't like wintertime's posting style but you're wrong if you think she's not doing something to stand up for her beliefs. Homeschooling parents are as much a part of the school reform revolution as volunteer teacher parents. Taking your kids out of the rotten system is better than trying to put a bandaid on it.