The aim of this research is to determine the predictive power of environmental ethics approaches of the development of high school students' environmental attitudes. In this sense, it is studied whether meaningful differences in significant predictive and dependent variants arise or do not arise when preschool education is received. A total of 200 high school students constituted the sample of the study. The relational screening model was used in the study. Environmental attitude measurement and Environmental ethics approach measurement used as data collection tool. According to the results obtained from the study, while a meaningful relationship was found between approaches of environmental ethics which effect attitude towards the environment - ecocentric ethics, ecofeminist ethics and theocentric ethics, there was no meaningful relationship discovered with the anthropocentric ethics approach. In this context, one of the important results of this study is that a significant difference has been identified in the approaches of ecofeminist and ecocentric ethics of high school students who have received a pre-school education and those who have not. The fact that the significant difference is in favor of high school students who have received a pre-school education is a meaningful result.