focuses on the interface between education and culture, particularly with respect to Hispanic populations, and she is the author of numerous books and articles on putting research into practice. She has a Ph.D. in social and philosophical foundations of education from Arizona State University (1985).

Roberta J. Flexer is associate professor of mathematics education in the Department of Education at the University of Colorado at Boulder. Her research focuses on the teaching and learning of elementary mathematics and on mathematics assessment. She has a Ph.D. in mathematics education from the University of Colorado at Boulder (1973).

Ellen C. Guiney is the executive director of the Boston Plan for Excellence in the Public Schools, a local fund that supports education reform in the Boston Public Schools. Previously, she served as the staff director of the education office of the U.S. Senate Committee on Labor and Human Resources, at the time of the passage of the Improving America's Schools Act. She has an M.A. in English from Boston College.

Kati P. Haycock is the director of The Education Trust in Washington, D.C., a national organization that works with states and districts to improve education in schools and colleges, particularly those serving low-income and minority students. She has worked as an advocate for children and youth and has written widely on raising the achievement of minority and low-income students. She has an M.A. in education policy from the University of California, Berkeley (1983).

Joseph F. Johnson, Jr., is the director of the Collaborative for School Improvement at the Charles A. Dana Center at the University of Texas at Austin. He provides technical assistance to the state education agency and local districts on the use of federal resources for excellence and equity. Previously, he served as the senior director of the Division of Accelerated Instruction at the Texas Education Agency, which administers Title I and other programs. He has a Ph.D. in education administration from the University of Texas at Austin (1992).

Sharon Lynn Kagan is a senior associate at the Bush Center in Child Development and Social Policy at Yale University and a senior research scientist at the Yale Child Study Center. She also is the president of the National Association for the Education of Young Children. Her research interests include the application of child-and parent-development research on public policy. She has an Ed.D. in curriculum and teaching from Columbia University, Teachers College (1979).

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