Forget about rating teachers—rate schools instead.

Jay Matthews:

Those unfortunate people in the District may worry about the quality of their teachers, and wait anxiously for the results of the school system’s controversial new evaluation of classroom techniques and test score improvement. But those of us in the Washington area suburbs don’t have to worry because we already know that close to 100 percent of our teachers are entirely satisfactory. How? Our school districts say so.
I asked suburban school officials to share the latest results from their teacher evaluations, which are usually done by principals and subject specialists. Here are the percentages of teachers rated satisfactory, in some cases called meeting or exceeding the standard: Alexandria 99 percent, Calvert 99.8 percent, Charles 98.4 percent, Culpeper 97 percent, Fairfax 99.1 percent, Falls Church 99.55 percent, Loudoun 99 percent, Montgomery 95 percent, Prince George’s 95.56 percent, and Prince William 98.3 percent.
Anne Arundel, Arlington, Fauquier and Howard, and Manassas City say they don’t collect such data. Carroll says it is doing it for the first time and hasn’t finished yet.
Those numbers in the high 90s sound good, but they don’t impress some advocates of better teaching. Near perfect teacher evaluation passing rates are common throughout the country.
One reason why D.C. Schools Chancellor Michelle A. Rhee has launched her complex IMPACT evaluation of the District’s teachers is that the research and training organization she founded, the New Teacher Project, is a sworn enemy of those standard evaluation systems. Since teacher ratings in most districts are as discerning as peewee soccer award night, with everyone getting a trophy, why bother?