David A. Walker is a Professor of Educational Research, Technology, and Assessment at Northern Illinois University (NIU). He holds a bachelor's degree from St. Olaf College and masters and doctoral degrees from Iowa State University of Science and Technology (ISU). Prior to NIU, he served on the faculty at Florida Atlantic University and was a post-doctorate researcher at ISU's Research Institute for Studies in Education. Dr. Walker has an extensive research record with 74 refereed publications, 12 monographs and technical reports, 111 refereed conference presentations, 22 invited presentations, and 142 statistical computer program creations. A majority of these scholarly works pertain to the themes of statistical methodology and/or research methods in areas such as effect sizes, reliability measures, and the general linear model.

He has been involved in numerous federal and state-based grants, with over 7 million funded, as an evaluator in projects affiliated with teacher education. Dr. Walker has taught courses in research methods, assessment, testing, measurement, and statistics and has expertise in quantitative methods of research.