Jenn Vadas is an economist and an assistant researcher for the Wisconsin Center for Education Research at the University of Wisconsin-Madison. Her expertise is in data analysis and experimental design. Collaborating with funders, school districts, union leaders, and institution of higher education, she conducted research on the existence and use of early signs of teacher effectiveness to improve decision-making processes at key points of a teacher’s career (recruitment, training, hiring, retention, and professional development). She also worked on the Student Achievement Guarantee in Education (SAGE) program evaluation team to estimate the effects of class size reductions on students’ test scores in schools with high levels of poverty in the state of Wisconsin. She is now contributing to the design and evaluation of two educational interventions in the Milwaukee Public Schools. As a Ph.D. candidate in economics at Pennsylvania State University, Jenn Vadas also worked on auction game theory and on estimating the effects of observed characteristics on the education production function using a large longitudinal data set.