Educators in Néw York are trying to make sense of the state’s evaluation system. The formula is supposed to consist of observations (60%); state scores (20%); and local assessments (20%). Yet the results don’t line up with common sense or common knowledge.

Some principals seem to be giving higher observation scores to teachers they want to protect because they believe they are valuable and don’t want to lose them

“In Scarsdale, regarded as one of the best school systems in the country, no teacher has been rated “highly effective” in classroom observations. It is the only district in the Lower Hudson Valley with that strict an evaluation. In Pleasantville, 99 percent of the teachers are rated as “highly effective” in the same category.”

Charlotte Danielson, whose rubric is the basis forest teacher evaluation systems, called these results “laughable.”

“Pleasantville schools Superintendent Mary Fox-Alter defended her district’s classroom observation scores, which use the Danielson model — saying the state’s “flawed” model had forced districts to scale or bump up the scores so “effective” teachers don’t end up with a rating of “developing.”

What is truly laughable is the effort to turn the art and craft of teaching into a scaled metric, like weighing apples at the supermarket. What is essentially a matter of human judgment, based on experience and wisdom, cannot be measured and graded. Its results will always be flawed, and the very act of measuring the unmeasurable will change teacher behavior to conform to the scale. If all we want is higher scores, this might be a good way to get them. If we want inspired teaching, it is not.