Data on science achievement, student attitudes and educational practices in the United States and 23 other countries were collected. This data was taken from random samples of the fifth, ninth, and twelfth grade levels. This report card conveys a few of the findings of the Second IEA Science Study regarding the performance of students in the U.S. science achievement comparisons were based on the results on common multiple choice items. Specific comparisons in this document include: (1) grades five and nine science achievement; (2) U.S. advanced science students in biology, chemistry, and physics; (3) process laboratory skills; (4) sex differences; (5) school and science attitudes; and (6) teacher reports of students' opportunity to learn science. Attached is a list of monographs and studies that are being undertaken by the U.S. division of the Second International Science Study. (CW)