Researchers examined 150 projects evaluating outdoor learning. Outdoor learning includes residential programs, field trips, summer schools, and other experiential programs. Researchers have concluded that, “…fieldwork, properly conceived, adequately planned, well taught and effectively followed up, offers learners opportunities to develop their knowledge and skills in ways that add value to their everyday experiences in the classroom.”
SOURCE: Dillon, J., Rickinson, M., Teamey, K., Morris, M., Young Choi, M., Sanders, D., et al. (2006). The value of outdoor learning: evidence from research in the UK and elsewhere. School science review, 87(320), 107-111.
http://www.outlab.ie/forums/documents/the_value_of_school_science_review_march_2006_87320_141.pdf