Supplemental Instruction (SI) is a peer facilitated program that targets traditionally difficult classes and provides regularly scheduled out-of-class review sessions. ACC is currently using Supplemental Instruction (SI) in several Math courses, Chemistry courses and Courses taught in ASL. In Fall 2008, the program will include select courses in History, Spanish, and English. Other courses are continuing to be added to the list. To find out what classes will be using SI, or to find out when SI sessions are held for your class, or just to find out more information about SI, please visit our SI website or contact any of the learning labs..