This document captures practical lessons from the environmental education initiative implemented under Phase I of the Agro-ecological Intensification and Diversification of Peri-urban Agriculture (IADA) project in Siem Reap Province, Cambodia. The project aims to raise environmental awareness among children from farming families through a two-tier learning approach: one month of classroom-based instruction followed by hands-on practice in school vegetable gardens of at least 150 m². The curriculum covers soil preparation, organic fertilization, mulching, compost production, irrigation management, and seasonal crop diversification. To ensure the long-term sustainability of these school garden models, Agrisud emphasizes close collaboration among school principals, teachers, and parent associations, together with transparent benefit-sharing mechanisms based on harvested vegetables or revenue reinvested in the school.