2018 No https://pubmed.ncbi.nlm.nih.gov/30047798/ Largo- Wight, E North America Observational Students Elementary (K-5) Nature contact intervention Outdoor classroom Green school Children Teachers’ redirections of child behavior were significantly fewer in the nature condition (t = 2.49, p < 0.05) compared to the control. Also, fewer children were off task in the nature condition on average. There were mixed well-being results; children reported no significance difference in happiness in the two conditions, but teachers reported modest benefit in child well-being in the nature condition. The outdoor classroom is a promising method for increasing nature contact and promoting student well-being.