This study was intended to identify and analyze factors that affect ecological attitudes of elementary school students. The research was a mixed method by using 147 students from four SD Kanisius (SDK), namely: SDK Kadirojo, SDK Mangunan, SDK Sorowajan, and SDK Kintelan. Data were collected through an online questionnaire. The results were analyzed using Exploration Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), and Structural Equation Model (SEM). The survey results obtained 10 variables and 95 valid indicators (α = 0.865). The results show that 5 variables contribute to the formation of environmental care attitude. The five variables are responsible attitude, relationship with God, relationship with school staff, relationship with parents. Of the five valid variables, the variable of parental relations has the greatest influence on the formation of the respondent's ecological attitude. The relationship between the three variables as follow Responsible Attitude > Parental Relations > Environmental Care Attitude (β = 5.803). This SEM structural model suitability test indicate that the estimate model was fit (χ²₍₁₃₇₎ = 139,67; GFI = 0,911; AGFI = 0,877; RMSEA = 0,012).