Graduate courses he has taught include correlation and regression, univariate and multivariate analysis of variance, hierarchical linear modeling and structural equation modeling. His research interests include multilevel modeling, mediation analysis, growth curve modeling and evaluation methodology as applied to large-scale educational experiments. His scholarship has appeared in journals such as Educational Research and Evaluation, Journal of Experimental Education and Multivariate Behavioral Research. He earned his PhD in Research Design and Statistics from Florida State University in 1997.