Discusses the need for researchers to determine what should be tested and how when evaluating educational computing programs, describes efforts of Educational Testing Service's National Assessment of Educational Progress (NAEP) to measure the impact of computers on achievement, and concludes that it will not be easy to evaluate computers' effects.…

Although dealing broadly with issues involving program evaluation, this paper is especially concerned with large-scale evaluations of federally funded education programs that are national in scope and, to some extent at least, compensatory in nature. The paper concentrates on a few basic problem areas that seem inherent in the concept of…