He has two areas of active research. The first focuses on statewide standardized test scores and their uses, particularly how test scores are used in statistical models that evaluate the effectiveness of teachers and schools. On a technical level, he also is interested in the extent to which test scores and the data from which they are drawn demonstrate certain desirable properties. The second area of research focuses on the integration of genetic data into social science research. In particular, he is interested in understanding the genetic architecture of educational attainment and the way in which schools can and do moderate the association between genes and educational attainment.