Cassandra Guarino is Professor of Education and Public Policy at the University of California Riverside. She obtained her PhD in the Economics of Education from Stanford University in 1999 with an emphasis on labor economics, and has held prior positions as an economist at the Rand Corporation and on the faculties of Michigan State and Indiana Universities. Her research focuses on teacher quality, teacher labor markets, school choice, and issues in which health and education are linked. Recent work has included several studies related to value-added measures of teacher performance, teacher effectiveness in the early grades, school choice, teacher mobility, and special needs identification. She has led numerous grants from a variety of sponsors, including the Institute of Education Sciences and various state agencies and foundation.