A study to assess the impact of school field trips on attitudes, behavior, and learning was conducted with 196 third and fifth grade children. Half the children went on an all-day field trip to a nature center to learn about the biology of trees; the other half were taught the same lesson outside their classroom during their regular science period. As measured by pre- and posttests, field experiences resulted in significant immediate learning and 30-day retention for all groups. Observational measures revealed that student behavior varied as a function of age and environmental context. A model