NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Publications by Karen Hammerness

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Working Papers and Chapters

May 2010Measure for Measure: The relationship between measures of instructional practice in middle school English Language Arts and teachers’ value-added scores
with Pam Grossman, Susanna Loeb, Julia Cohen, James Wyckoff, Donald Boyd, Hamilton Lankford: w16015
Even as research has begun to document that teachers matter, there is less certainty about what attributes of teachers make the most difference in raising student achievement. Numerous studies have estimated the relationship between teachers' characteristics, such as work experience and academic performance, and their value-added to student achievement; but, few have explored whether instructional practices predict student test score gains. In this study, we ask what classroom practices, if any, differentiate teachers with high impact on student achievement in middle school English Language Arts from those with lower impact. In so doing, the study also explores to what extent value-added measures signal differences in instructional quality. Even with the small sample used in our analysis...
Recruiting Effective Math Teachers: How Do Math Immersion Teachers Compare?: Evidence from New York City
with Donald Boyd, Pam Grossman, Hamilton Lankford, Susanna Loeb, Mathew Ronfeldt, James Wyckoff: w16017
School districts often struggle to recruit and retain effective math teachers. Alternative-route certification programs aim to expand the pool of teachers available; however, many alternate routes have not been able to attract large numbers of teacher candidates with undergraduate degrees in math. In response, some districts, including Baltimore, Philadelphia, Washington D.C., and New York City, have developed alternative programs with a math immersion component to recruit candidates who do not have undergraduate majors in math. Such programs provide potential math teachers with intensive math preparation to meet state certification requirements while, at the same time maintaining an early-entry approach in which individuals who have not completed a teacher preparation program can beco...

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