Merryl Tisch, chancellor of the Néw York Board of Regents, has delayed implementation of Governor Andrew Cuomo’s draconian and misguided plan to evaluate teachers by test scores.

When Néw York sought Race to the Top money, it promised that test scores would count for 20%. Under pressure from Governor Cuomo, the proportion rose to 40%. Cuomo was angry when almost every teacher was rated effective or highly effective. He wanted to fire teachers. Tisch wrote a letter to Chomo agreeing with his demand to raise the testing proportion to 50%.

The legislature caved during budget negotiations and passed a “matrix” that implies 50% but left the final determination to the Regents. Tisch decided more time was necessary and extended the deadline.

The sad part of this drama is that no one ever refers to research. Numerous studies and reports have refuted the validity of test scores for measuring teacher quality. Start with the American Statistical Association’s statement on VAM. There are too many variables that the teacher does not control that influence test scores.

The current dispute seems to be about whether to misjudge teacher quality sooner or later.