This presentation provides an in-process review of researching efforts at the U.S. Army Research Institute and the Institute for Defense Analysis to update their earlier studies of Computer Based Instruction (CBI) cost-effectiveness. In the presentation five topics are addressed: (1) the differences between education and training, and why they matter; (2) findings of earlier studies on the cost-effectiveness of CBI in military training; (3) some methodological issues uncovered by these earlier studies; (4) some methodological improvements applied to update these earlier studies; and (5) some preliminary results. Sixteen replicas of the slides used in the presentation are appended. (Author/JAZ)