Tree cover and species composition effects on academic performance of primary school students - Fig 2

<p>The average test scores of model outputs for Grade 6 students corrected for socio-economic factors using learning opportunity index (LOI) 2009 from all schools (n = 281) compared to (A) tree cover (R = 0.114, P < 0.055) (B) soft surface (R = -0.027, P = 0.655) (C) tree species diversity measured in Shannon-Wiener index (R = 0.028, P = 0.649) and for schools ranked higher on LOI 2009 (LOI ≥ 0.5) (n = 144) (D) tree cover (R = 0.229, P = 0.001) (E) soft surface (R = -0.081, P = 0.329) and (F) tree species diversity based on the Shannon-Wiener index (R = 0.139, P = 0.096). Data are for the Toronto District School Board (TDSB) in Toronto, Ontario, Canada for the years 2005–2010.