1 Measuring Teacher Quality in Practice Deborah Loewenberg Ball and Heather Hill Learning Mathematics for Teaching Project Hyman Bass, Merrie Blunk, Charalambos Charalambous, Seán Delaney, Imani Goffney, Jennifer Lewis, Geoffrey Phelps, Stephen Schilling, Laurie Sleep, Mark Thames, and Deborah Zopf Measurement Challenges and the Assessment of Teacher Quality Educational Testing Service 2007 Conference • San Francisco,CA • September 24 - 25, 2007 © 2007 Mathematics Teaching and Learning to Teach School of Education • University of Michigan • Ann Arbor, MI 48109-1259 • (734) 615-7235 • mtlt@umich.edu Please do not circulate or cite without permission