His principal teaching assignments include research and quantitative methods at the graduate and undergraduate levels. Prior to his current position, he served as an Associate Professor for eight years in the College of Juvenile Justice at Prairie View A&M University where his principal teaching assignments comprised research methods, applied statistical methods and economics of crime at the graduate level. As a graduate faculty, he chaired, and was member of, master’s theses and also a member of dissertation committee, in addition to serving as the chair of the Institutional Review Board (IRB). At Prairie View, Dr. Mupier served also as the Program Evaluation and Research Coordinator for the Juvenile Crime Prevention Center.