Stanford prof and Obama education advisor, Linda Darling-Hammond is the country’s strongest voice for teacher excellence and preparation for the profession. She has also been a critic of Teach for America’s obvious weak points. Does this make her a hater of TFA? Yes says Ed (Private) Sector’s Kevin Carey who will tolerate no criticism when it comes to private ventures in education. Not so, says blogger Sherman Dorn. He’s right, of course.