He teaches educational research methods and program evaluation. He is one of the authors of Methods in Educational Research: From Theory to Practice (2010) and the author of Program Evaluation in Practice: Core Concepts and Examples for Discussion and Analysis (2008). He has conducted program evaluation for the National Science Foundation (NSF), U.S. Department of Education, U.S. Department of Labor, New York City Department of Education, and New York State Department of Education, to name a few. Dr. ...