I think one of the points in this Slate piece summarized this doubt nicely:
The fact that Rhee is a hard-working Ivy League graduate makes the elite press respect her as one of their own. And Rhee's flair for the dramatic makes her irresistible. In his well-written and highly favorable biography, The Bee Eater, Richard Whitmire recounts that as a teacher in Baltimore, Rhee grabbed the attention of her students one day when she swatted a bee flying around the classroom and promptly swallowed it. As a chancellor, Rhee once told a film crew, "I'm going to fire somebody in a little while. Do you want to see that?"
If she's not careful (and Michelle Rhee often isn't), she can come off as..."Hey, if we just treat these brown kids rougher, they'll do better with less money!"
Why? Because you say so?
I don't think Teacher's Unions are to blame for what's happening in Education. I think it boils down to what usually ails progress in America, our fellow Americans.
We still keep falling for this bull@#$% about a free lunch. We demand first class Government, with Third World Tax Rates. We want the best, as long as we don't have to pay for it...ever. We want to do things on the cheap, and are somehow shocked (shocked I tell you) that the kiddies grades and test scores are suffering.
Only we are that myopic, and Michelle Rhee didn't help.
At the same time, I think that Michelle Rhee's right about the problems we face. I do think its too hard to fire problem Teachers. I personally don't have problem with merit-based pay, but if we're going to do that, we really need to start paying Teachers like Doctors or Lawyers (Public Universities do it at the collegiate level). And the notion of a Teacher spending even a fraction of their own meager pay to cover for supplies or books is obscene.
Still, I thought this paragraph really encapsulated my doubts about her, or at the very least, the rhetoric that blasts Teacher's Unions:
Most education researchers, though, recognize that Rhee's simple vision of heroic teachers saving American education is a fantasy, and that her dramatic, often authoritarian, style is ill-suited for education. If the ability to fire bad teachers and pay great teachers more were the key missing ingredient in education reform, why haven't charter schools, 88% of which are nonunionized and have that flexibility, lit the education world on fire? Why did the nation's most comprehensive study of charter schools, conducted by Stanford University researchers and sponsored by pro-charter foundations, conclude that charters outperformed regular public schools only 17 percent of the time, and actually did significantly worse 37 percent of the time? Why don't Southern states, which have weak teachers' unions, or none at all, outperform other parts of the country?