Paul Bailey is a researcher who focuses on statistical methodology and measurement. His work at AIR has focused on developing measures of scientific output, value added modeling for educator evaluation, as well as evaluation of education related programs using quasi-experimental designs. Prior to joining AIR, Paul earned a Ph.D. in Economics from the University of Maryland where he also worked as a research assistant at the U.S. Census. He has also worked at NORC under James Heckman on an evaluation of the Perry Preschool while earning an MS in statistics from the University of Chicago. Prior to working in the social sciences, Paul was a radiation physicist for the U.S. Government’s Environmental Measurements Laboratory where he published papers on environmental neutron radiation and safety as well as cleanup after the environment is contaminated with anthropogenic radiation sources.