Estimates of the costs of including hands-on measures of science skills in a large-scale assessment program were derived from a field trial involving more than 2,000 fifth and sixth graders. Results suggest that complexity makes hands-on assessments more than three times as expensive as open-ended writing assessments. (SLD)

Describes a pilot project of the Park/School Program which involved graduate students in environmental studies conducting field studies in ecology with 46 fifth graders. Provides an overview of the project's potential for effecting change inside and outside the classroom, and presents recommendations for future programs and research. (LZ)