The Echo

“We did not find improvements in student achievement at any of the grade levels,” said Julie A. Marsh, the report’s lead researcher and a visiting professor at the University of Southern California. “A lot of the principals and teachers saw the bonuses as a recognition and reward, as icing on the cake. But it’s not necessarily something that motivated them to change.”

The results add to a growing body of evidence nationally that so-called pay-for-performance bonuses for teachers that consist only of financial incentives have no effect on student achievement, the researchers wrote. Even so, federal education policy champions the concept, and spending on performance-based pay for teachers grew to $439 million nationally last year from $99 million in 2006, the study said.

The study, commissioned by the city, is to be published Monday by the RAND Corporation, the public policy research institution. It compared the performance of the approximately 200 city schools that participated in the bonus program with that of a control group of schools.

City officials did not dispute the study results, but they said they did not believe the money was wasted, and indicated that they would continue to seek a merit pay model that worked.