This news is based on the following article: Sivarajah S, Smith SM, Thomas SC. Tree cover and species composition effects on academic performance of primary school students. PLoS One 2018 ; 13(2):e0193254. doi: 10.1371/journal.pone.0193254.
This Canadian study of schools in Toronto provides evidence in favor of greening school properties by showing an impact of tree cover on the academic performances in schools in poorer districts.