The third conference on improving mathematics and science assessment brought together more than 550 educators, researchers, and policymakers. Recommendations and information from the conference are incorporated into this report. Conference consensus was that students must recognize that there is more to assessment than grades and scores and begin to see assessment as a crucial and integral part of education. They should assume increasing responsibility for documenting and reflecting on their own progress as they move through school. Parents and the public must hold high expectations for instruction and for student participation. Teachers will hold all students, regardless of their backgrounds, to high standards and will recognize that assessment cannot be separated from learning. Principals and other administrators must oversee the reform of mathematics and science assessment and ensure that the curriculum reflects what we want students to know. An 18-item reading list is attached, and an appendix lists conference participants and sessions. (SLD)