| 2020 – Present | Professor of Educational Statistics, University of Nevada, Las Vegas (UNLV) |
| 2017 – Present | Professor Emeritus, University of Arkansas (U of A)* |
| 2017 – 2019 | Associate Dean for Research, College of Education, UNLV |
| 2011 – 2015 | Director of Research and Assessment, Office of the Vice Provost, U of A. |
| 2005 – 2008 | Senior Advisor, Office of the Deputy Secretary, US Department of Education |
| 2003 – 2017 | Professor of Educational Statistics, University of Arkansas** |
| 2000 – 2003 | Associate Professor of Educational Statistics, University of Arkansas |
| 1995 – 2000 | Assistant Professor of Educational Statistics, University of Arkansas |
| 1993 – 1995 | Assistant Professor of Educational Statistics, University of Illinois |
| * Promoted to rank of Professor Emeritus in 2017 at the Age of 53 at the University of Arkansas. | |
| ** Promoted to rank of Professor at the age of 39, one of three professors to attain this rank prior to age of 50. | |
| *** Senior advisor to the Deputy Secretary of Education designing large scale data and growth models to improve educational accountability. Additionally, assisted with designing and writing educational policy for the K-12 and postsecondary educational systems. | |
