The Southern Illinois University School of Medicine (SIU-SOM) has utilized problem-based learning (PBL) in its curriculum since 1981, when Dr. Howard Barrows joined the faculty. From 1989 to 2000, SIU-SOM implemented two parallel curricula for the basic science years (years I and II), one curriculum being a problem-based learning curriculum (PBLC). An executive decision to design and implement ...