If you listen to the numbers, there's no need for any change in the way teachers and principals are evaluated in public schools here in Washington State.
Data is in from a first-ever statewide survey about their performance. It says very few teachers are a problem: not even 500 were rated unsatisfactory in all of Washington.
That's less than three quarters of one percent (.75%) of the state's public school teachers. And even fewer principals – only 41 of nearly 3,000 – got a bad write up.