I recently came across a book called How to Walk to School, which tells the story of a turnaround project in a Chicago public school. What's different about this story is that the turnaround was the fruit of a collaboration between a new principal and the middle-class parents who lived nearby. Instead of moving to the suburbs or sending their kids to private schools, these parents worked with the principal to turn the local school (Nettelhorst) into the kind of place they'd send their kids to. This wasn't just a matter of sprucing the place up and fundraising for extras (though this is part of it). They also looked at the quality of instruction and worked on ways to improve teaching within the school.
I know many readers of Gifted Exchange are veteran educational activists... because you've had to be. Schools, for a variety of reasons, generally have to serve the norm. Often they don't do that! But even many good schools simply can't deal well with a child who really bucks the norm. You have had to carve out exceptions to policies, make new policies, lobby for new classes, extra services and so forth.
Sometimes it doesn't work. And so you wind up homeschooling, or moving to a different community, or paying tuition at a private school that will work with you. But I'd love to hear some stories from readers who have successfully worked with teachers and principals to change their local school to better serve both your own children, and other gifted children who will come along in the future.