This study was done to explore elementary school children's waste consciousness at NES and NonNES. The pupil's consciousness was viewed from three aspects: knowledge, attitude, and action in relation to waste and its management. The study involved 647 elementary school pupils in Denpasar city, Bali, Indonesia. The data were collected using questionnaire, interview, and observation. The question coverage covers 1) the types of solid waste and the colors of the garbage bins for them, 2) waste management actions taken at school, 3) waste management difficulties faced at school, 4) pupils' attitudes when seeing an inappropriate waste disposal behavior, and 5) actions taken to reuse waste at school. The data were analyzed through qualitative and percentage analysis. The result showed that pupils' consciousness of the NES and those of the others do not differ much. Hence, the winning of the National Eco-School reputation does not guarantee the possession of a higher level of waste consciousness of the pupils than that of those who come from other schools.