The study found that Impact caused more low-performing teachers to leave the school system than otherwise would have been expected. The program also seemed to improve teaching quality – as measured by classroom observations and test scores – of teachers with both strong and weak evaluation scores.
“High-powered incentives linked to multiple indicators of teacher performance can substantially improve the measured performance of the teaching work force,” conclude the researchers, Thomas Dee of Stanford University’s Graduate School of Education and James Wyckoff of the Curry School of Education at the University of Virginia. Evaluation programs, they add, can bring “substantive and long-term educational and economic benefits” both by “avoiding the career-long retention of the lowest-performing teachers and through broad increases in teacher performance.”
Labels: DOE, NJEA, VAM