This study, with a quantitative approach and a non-experimental, cross-sectional, and correlational design, evaluated the levels of environmental knowledge, attitudes, dispositions, and practices of 40 students from 3rd to 5th grade of secondary school at the San Marcos Educational Institution in 2025, using census sampling. A structured 17-item survey was used, with a reliability level of 0.755 (Cronbach's alpha). Descriptive analysis allowed characterizing the responses, and since normality was not found in the data (Shapiro-Wilk test), Spearman's Rho coefficient was applied for inferential analysis. The results reveal that, while most students recognize the principles of the circular economy (reduce, reuse, and recycle), there is a weak disposition toward sustainable practices such as waste separation and support for recycling programs. Uncertainty was also observed regarding the appl...