Maurice Samuels, PhD, has led several of CEMSE’s science, technology, engineering, and mathematics (STEM) program evaluations that have focused on teacher professional development, out-of-school programing, and teacher education. Currently he is a co-principal investigator of an evaluation research project funded by National Science Foundation (NSF), through which he and his colleagues are engaging in a full-scale study aimed at demonstrating and further developing CEMSE's implementation instruments. Maurice joined the CEMSE evaluation group in 2009 after serving as a postdoctoral fellow on a multi-site NSF grant that conceptualized and field-tested an evaluation approach to STEM. He has published in the areas of school-based evaluation, the role of culture in evaluation, and is an active member of the American Evaluation Association. Maurice has a PhD in Educational Psychology from the University of Illinois at Urbana-Champaign. Before entering graduate school, Maurice taught middle and high school mathematics.