This paper aims at evaluating the direct and indirect effects of an educational program on students and parents knowledge, attitudes and practices (KAP) regarding consumption and disposal of plastics. The program takes the form of an environmental education module with value-laded content, targeting 15 matched pairs of primary schools, as part of their subjects. The intervention is an adaptation of the content and curricula embedded in the National Oceanic and Atmospheric Administration (NOOA) marine debris program.