For the past 13 years the JASON Project has offered students and teachers a unique opportunity to learn about how the earth and space systems support life, and technologies used to study the earth-space system. The JASON Project aspires to help teachers to increase student learning of content-specific information; and to engage students in complex, difficult tasks that lead to the development of scientific thinking and problem-solving skills. In doing so, it provides teachers with instructional tools that bring together academic standards, the rich research environment of a new curriculum topic each year, and student performance measures that support state standards and assessment initiatives. The Center for Children and Technology (CCT) proposed to study the impact of the JASON Project on a diverse population of students' science experiences and learning by undertaking a 1-year comprehensive evaluation of student learning in the JASON multimedia environment. The major design components of CCT's study and its assessment techniques are illustrated in Figure One of this report summary. The first-year study showed that the JASON Project is used in diverse ways in diverse contexts, and that the variety of use significantly influences how teachers and students experience the JASON multimedia curriculum. CCT researchers worked with 9 science teachers and 269 students from 8 middle schools located around the country in Arkansas, California, Michigan, New York, Ohio, Pennsylvania, Texas, and Wisconsin. This report summary provides information on: JASON impact on teachers; JASON student learning profiles; JASON impact on student learning; common contextual issues and challenges; and recommendations. (AEF)