Few individuals in the history of education have had greater impact on educational policy and practice than Benjamin S. Bloom. During a career that spanned over five decades, his research and writing guided the development of innumerable educational programs and provided powerful insights into the untapped potential of educators to help all students learn well. Benjamin S. Bloom spent most of his professional life at the University of Chicago, where he held the Charles H. Swift Distinguished Service endowed chair. At this university, he founded and chaired the program in Measurement, Evaluation, and Statistical Analysis (or MESA), authored or co-authored 17 books, and wrote numerous journal articles. He served as the president of the American Educational Research Association (AERA), a member of the National Academy of Education, and a founding member of the International Association for the Evaluation of Educational Achievement (IEA). Also the recipient of several awards, perhaps his g
