2018 No https://pubmed.ncbi.nlm.nih.gov/30414551/ Maekevych, I Europe Observational Epidemiology Study Students Elementary (K-5) High School (9-12) Greenness Green space Grades Learning Children Epidemiology No associations were observed between any of the greenspace variables and grades in Wesel children. Several statistically significant associations were observed with German and maths grades in Munich children, however associations were inconsistent across sensitivity analyses.