A Statistical Experiment Simulator (STEXSIM) has been developed which permits one to stimulate on a digital computer a wide range of experimental environments. As a teaching aid in applied statistics, it provides a means for an instructor to define a completely crossed factorial model with up to seven fixed or random main effects, three two-factor interactions, and one three-factor interaction. A student designs an experiment which probes this model in order to draw appropriate inferences. STEXSIM reads the design and "conducts" the experiment he has specified providing the resultant "observations" which the student then analyzes. This report discusses in detail the program including input specifications and output interpretation. Sufficient detail is presented to permit one to use the model himself. (STEXSIM is programed in FORTRAN IV.) The report also describes the formulation, execution, and analysis of 30 "student" experiments run using seven different "instructor" models. (Author/JY)