I draw attention to this post in my recent journal entry, mostly about other things.
My ethnic group, a small religious sect known as Quakers, has historic affinity with Sufis. When I see Diane Ravitch piling on the invective, inflaming anger against this ethnicity, I have to worry. Will Quakers be next?
In my neck of the woods, a public school need not even be charter to have an ethnic focus. We have a Japanese immersion option as a part of our main-line public schools. Lincoln High teaches Arabic.
So now we learn these Gulen schools are somewhat biased toward the Turkish world and ethnicity. Not Japanese. Not Arabic exactly. So what? We're supposed to act like knee-jerk robots and write our representatives that all public schools must be the same?
Oh that's right. Charter schools are not "really" public schools. They usually have to find their own building, none provided by the district. They're definitely second class, the target of lots of media campaigns.
So if an idealistic team of young folks, millennials of some stripe, want to help start a new public school with new ideas, new experiments, where do they apply? For one thing they're going to focus on hip hop a lot more, the lyrics and subculture, when teaching the history of this land (based on a true story ).
Oh, there's no possible way? That door is closed?
You can start a new charter school, but the non-charter public schools are not opening their ranks any further? Those are all a done deal? Says who again?
I'm thinking why not start over with a blank slate? Given the Business Plot that succeeded in Washington DC awhile back, I think we might debate whether we really have *any* US public schools. I'd say we have imposters only. Real US public schools would be a whole different animal. 
They'd teach about our heritage for one thing, meaning about Smedley Butler and the Business Plot in some chapter (when explaining Occupy maybe?). It didn't succeed back then (FDR's day), only later (around Reagan).
By now it's all corporately sponsored puppet shows (not a heavily disputed proposition), bread and circuses for the worthy citizens of Rome.
Don't worry, if you've had the standard so-called "public" education, that "Rome stuff" won't mean a thing.