Stephanos Bibas joined the College of Law faculty as an Associate Professor in 2001 and taught criminal law and criminal procedure until 2005. He is a scholar of criminal procedure with expertise in criminal charging, plea bargaining and sentencing. A former federal prosecutor, Bibas examines how procedural rules written for jury trials have unintended consequences when cases involving jury trials are the exception, rather than the rule, with 95 percent of defendants pleading guilty. Bibas also studies the role of substantive goals such as remorse and apology in criminal procedure. After leaving Iowa, Professor Bibas joined the law faculty of the University of Pennsylvania.