2024 No Association of Education Outside the Classroom and Pupils’ Psychosocial Well-Being: Results From a School Year Implementation https://doi.org/10.1111/josh.12730 Bølling, Mads Europe Experimental Observational Students Elementary (K-5) Middle/Jr High (6-8) Green space Stress/Anxiety Cognitive Function Other Mental health Outdoor learning school-based outdoor education school-based health promotion udeskole Quasi-experimental yearlong study of 631 Danish students showed outdoor classroom instruction improved prosocial behavior and reduced peer problems, especially for low-SES students. Supports outdoor learning as a school health strategy. 2018