Andrew Jaciw has 22 years of experience in the field of education: 6 as a practitioner and 16 as a researcher. As Empirical’s Chief Scientist, Jaciw has led the design and analysis of 25 randomized experiments and multiple quasi-experiments involving SEAs and LEAs, including 6 trials carried out through ED’s Institute of Education Sciences grants. Jaciw directed the design and analysis and co-authored the report of a state-wide, cluster-randomized trial involving 80 schools and around 700 teachers, assessing the efficacy of the Alabama Math Science Technology Initiative over a three year period. His research interests include problems of generalizability, implementation fidelity, and use of mixed methods to unpack impact findings from experiments. Stanford University awarded Jaciw an MS in Epidemiology and a PhD in Education, focused on identifying factors that lead to discrepancies between quasi-experiments and true experiments in the analysis of program impacts. Before his MS, Jaciw earned a BS in statistics and MA in math education at the University of Toronto and worked as a statistical analyst at the Ontario Institute for Studies in Education and Ontario's Education Quality and Accountability Office.