Abstract : This study assessed the pupils’ participation in the implementation of the Youth for Environment in Schools Organization (YES-O) programs and their effects on their learning progress as a basis for the development of the EcoQuest Mission Passport. It used the descriptive-survey research method in which data were collected through an adopted questionnaire from 316 grades four to six pupils in 20 schools. Results showed strong pupil participation in clean-up drives, tree planting, and water-saving practices. In contrast, seedbank, biodiversity, and waste management initiatives were less participated in due to resource constraints. Nonetheless, the programs had a positive influence on science learning by enhancing pupils’ understanding of environmental concepts, instilling pro-environmental values, and encouraging sustainable practices. To address gaps, the study recommends the EcoQuest: YES-O Mission Passport, a science activity journal designed for active documentation, performance-based assessment, and evaluation. This initiative supports Republic Act No. 9512 on environmental awareness and strengthens the integration of YES-O with the science curriculum to foster scientifically literate and environmentally responsible learners.
F. et al. (2026) studied this question.