The purpose of this study is to evaluate eighth grade students&rsquo / environmental literacy (knowledge, attitude, sensitivity and concern) level and to assess effects of socio-demographic variables (gender, parents&rsquo / educational level, parents&rsquo / work status and source of information about environmental knowledge) on their environmental literacy level. A total of 437 (212 girls and 225 boys) eight grade public school students are administered Environmental Literacy Test which includes four parts / knowledge (20 items), attitude (10 items), sensitivity (19 items), concern (12 items). Descriptive analysis showed that students have positive attitude and high degrees of concern and sensitivity toward environment / however they have low to moderate levels of environmental knowledge. In order to evaluate the role of socio-demographic variables on students&rsquo / environmental literacy level, six separate one-way MANOVAs were conducted. The results revealed that / a) there is significant effect of gender on students&rsquo / environmental literacy regarding to concern, in favor of girls, b) there is a significant effect of parents&rsquo / educational level on students&rsquo / environmental literacy / c) there is a significant effect of mothers&rsquo / work status on students&rsquo / environmental literacy and d) there is not a significant effect of source of information about environment on students&rsquo / environmental literacy.