National science assessments and international comparisons indicate that science achievement in the United States is stagnant or declining. Of the many steps needed to improve U.S. science education, the authors write, none is more important than improving teacher training and preparation. Analyses of scores on the National Assessment of…

Too many middle school students struggle to comprehend their textbooks in science and other content areas. Thus, many adolescent learners lag behind in developing scientific literacy, which the National Research Council has defined as sufficient understanding of the scientific concepts and processes required for personal decision making,…