The PBS show “Frontline” on Tuesday night aired John Merrow’s documentary on school reformer Michelle Rhee, which focused on the 3 1/2 years she was chancellor of D.C. Public Schools. There is sure to be a variety of opinions on what it said and what it didn’t say.

Here is the reaction of education historian Diane Ravitch, who has become the preeminent voice in the growing opposition to Rhee’s style of school reform. This appeared on Ravitch’s blog.

By Diane Ravitch

I was invited by Frontline to offer reactions to the documentary about Michelle Rhee. I was disappointed that the documentary did not mention that Rhee is now working on behalf of a far-right agenda of privatization; that Washington Teachers Union President George Parker now works for StudentsFirst; that Rhee’s “miraculous gains” as a teacher in Baltimore have been discredited....